281379240

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1999}}^1$

素因数の和:2056

約数の個数: 192

約数和(自身を含む): 1010880000

約数和(自身を除く): 729500760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 23, 24, 30, 34, 36, 40, 45, 46, 51, 60, 68, 69, 72, 85, 90, 92, 102, 115, 120, 136, 138, 153, 170, 180, 184, 204, 207, 230, 255, 276, 306, 340, 345, 360, 391, 408, 414, 460, 510, 552, 612, 680, 690, 765, 782, 828, 920, 1020, 1035, 1173, 1224, 1380, 1530, 1564, 1656, 1955, 1999, 2040, 2070, 2346, 2760, 3060, 3128, 3519, 3910, 3998, 4140, 4692, 5865, 5997, 6120, 7038, 7820, 7996, 8280, 9384, 9995, 11730, 11994, 14076, 15640, 15992, 17595, 17991, 19990, 23460, 23988, 28152, 29985, 33983, 35190, 35982, 39980, 45977, 46920, 47976, 59970, 67966, 70380, 71964, 79960, 89955, 91954, 101949, 119940, 135932, 137931, 140760, 143928, 169915, 179910, 183908, 203898, 229885, 239880, 271864, 275862, 305847, 339830, 359820, 367816, 407796, 413793, 459770, 509745, 551724, 611694, 679660, 689655, 719640, 781609, 815592, 827586, 919540, 1019490, 1103448, 1223388, 1359320, 1379310, 1529235, 1563218, 1655172, 1839080, 2038980, 2068965, 2344827, 2446776, 2758620, 3058470, 3126436, 3310344, 3908045, 4077960, 4137930, 4689654, 5517240, 6116940, 6252872, 7034481, 7816090, 8275860, 9379308, 11724135, 12233880, 14068962, 15632180, 16551720, 18758616, 23448270, 28137924, 31264360, 35172405, 46896540, 56275848, 70344810, 93793080, 140689620, 281379240]

約数ペア:

[(1, 281379240), (2, 140689620), (3, 93793080), (4, 70344810), (5, 56275848), (6, 46896540), (8, 35172405), (9, 31264360), (10, 28137924), (12, 23448270), (15, 18758616), (17, 16551720), (18, 15632180), (20, 14068962), (23, 12233880), (24, 11724135), (30, 9379308), (34, 8275860), (36, 7816090), (40, 7034481), (45, 6252872), (46, 6116940), (51, 5517240), (60, 4689654), (68, 4137930), (69, 4077960), (72, 3908045), (85, 3310344), (90, 3126436), (92, 3058470), (102, 2758620), (115, 2446776), (120, 2344827), (136, 2068965), (138, 2038980), (153, 1839080), (170, 1655172), (180, 1563218), (184, 1529235), (204, 1379310), (207, 1359320), (230, 1223388), (255, 1103448), (276, 1019490), (306, 919540), (340, 827586), (345, 815592), (360, 781609), (391, 719640), (408, 689655), (414, 679660), (460, 611694), (510, 551724), (552, 509745), (612, 459770), (680, 413793), (690, 407796), (765, 367816), (782, 359820), (828, 339830), (920, 305847), (1020, 275862), (1035, 271864), (1173, 239880), (1224, 229885), (1380, 203898), (1530, 183908), (1564, 179910), (1656, 169915), (1955, 143928), (1999, 140760), (2040, 137931), (2070, 135932), (2346, 119940), (2760, 101949), (3060, 91954), (3128, 89955), (3519, 79960), (3910, 71964), (3998, 70380), (4140, 67966), (4692, 59970), (5865, 47976), (5997, 46920), (6120, 45977), (7038, 39980), (7820, 35982), (7996, 35190), (8280, 33983), (9384, 29985), (9995, 28152), (11730, 23988), (11994, 23460), (14076, 19990), (15640, 17991), (15992, 17595)]