20999160

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:678

約数の個数: 192

約数和(自身を含む): 84127680

約数和(自身を除く): 63128520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 18, 20, 21, 24, 26, 28, 30, 35, 36, 39, 40, 42, 45, 52, 56, 60, 63, 65, 70, 72, 78, 84, 90, 91, 104, 105, 117, 120, 126, 130, 140, 156, 168, 180, 182, 195, 210, 234, 252, 260, 273, 280, 312, 315, 360, 364, 390, 420, 455, 468, 504, 520, 546, 585, 630, 641, 728, 780, 819, 840, 910, 936, 1092, 1170, 1260, 1282, 1365, 1560, 1638, 1820, 1923, 2184, 2340, 2520, 2564, 2730, 3205, 3276, 3640, 3846, 4095, 4487, 4680, 5128, 5460, 5769, 6410, 6552, 7692, 8190, 8333, 8974, 9615, 10920, 11538, 12820, 13461, 15384, 16380, 16666, 17948, 19230, 22435, 23076, 24999, 25640, 26922, 28845, 32760, 33332, 35896, 38460, 40383, 41665, 44870, 46152, 49998, 53844, 57690, 58331, 66664, 67305, 74997, 76920, 80766, 83330, 89740, 99996, 107688, 115380, 116662, 124995, 134610, 149994, 161532, 166660, 174993, 179480, 199992, 201915, 230760, 233324, 249990, 269220, 291655, 299988, 323064, 333320, 349986, 374985, 403830, 466648, 499980, 524979, 538440, 583310, 599976, 699972, 749970, 807660, 874965, 999960, 1049958, 1166620, 1399944, 1499940, 1615320, 1749930, 2099916, 2333240, 2624895, 2999880, 3499860, 4199832, 5249790, 6999720, 10499580, 20999160]

約数ペア:

[(1, 20999160), (2, 10499580), (3, 6999720), (4, 5249790), (5, 4199832), (6, 3499860), (7, 2999880), (8, 2624895), (9, 2333240), (10, 2099916), (12, 1749930), (13, 1615320), (14, 1499940), (15, 1399944), (18, 1166620), (20, 1049958), (21, 999960), (24, 874965), (26, 807660), (28, 749970), (30, 699972), (35, 599976), (36, 583310), (39, 538440), (40, 524979), (42, 499980), (45, 466648), (52, 403830), (56, 374985), (60, 349986), (63, 333320), (65, 323064), (70, 299988), (72, 291655), (78, 269220), (84, 249990), (90, 233324), (91, 230760), (104, 201915), (105, 199992), (117, 179480), (120, 174993), (126, 166660), (130, 161532), (140, 149994), (156, 134610), (168, 124995), (180, 116662), (182, 115380), (195, 107688), (210, 99996), (234, 89740), (252, 83330), (260, 80766), (273, 76920), (280, 74997), (312, 67305), (315, 66664), (360, 58331), (364, 57690), (390, 53844), (420, 49998), (455, 46152), (468, 44870), (504, 41665), (520, 40383), (546, 38460), (585, 35896), (630, 33332), (641, 32760), (728, 28845), (780, 26922), (819, 25640), (840, 24999), (910, 23076), (936, 22435), (1092, 19230), (1170, 17948), (1260, 16666), (1282, 16380), (1365, 15384), (1560, 13461), (1638, 12820), (1820, 11538), (1923, 10920), (2184, 9615), (2340, 8974), (2520, 8333), (2564, 8190), (2730, 7692), (3205, 6552), (3276, 6410), (3640, 5769), (3846, 5460), (4095, 5128), (4487, 4680)]