21751560

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:148

約数の個数: 192

約数和(自身を含む): 76826880

約数和(自身を除く): 55075320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 37, 40, 45, 46, 60, 69, 71, 72, 74, 90, 92, 111, 115, 120, 138, 142, 148, 180, 184, 185, 207, 213, 222, 230, 276, 284, 296, 333, 345, 355, 360, 370, 414, 426, 444, 460, 552, 555, 568, 639, 666, 690, 710, 740, 828, 851, 852, 888, 920, 1035, 1065, 1110, 1278, 1332, 1380, 1420, 1480, 1633, 1656, 1665, 1702, 1704, 2070, 2130, 2220, 2553, 2556, 2627, 2664, 2760, 2840, 3195, 3266, 3330, 3404, 4140, 4255, 4260, 4440, 4899, 5106, 5112, 5254, 6390, 6532, 6660, 6808, 7659, 7881, 8165, 8280, 8510, 8520, 9798, 10212, 10508, 12765, 12780, 13064, 13135, 13320, 14697, 15318, 15762, 16330, 17020, 19596, 20424, 21016, 23643, 24495, 25530, 25560, 26270, 29394, 30636, 31524, 32660, 34040, 38295, 39192, 39405, 47286, 48990, 51060, 52540, 58788, 60421, 61272, 63048, 65320, 73485, 76590, 78810, 94572, 97980, 102120, 105080, 117576, 118215, 120842, 146970, 153180, 157620, 181263, 189144, 195960, 236430, 241684, 293940, 302105, 306360, 315240, 362526, 472860, 483368, 543789, 587880, 604210, 725052, 906315, 945720, 1087578, 1208420, 1450104, 1812630, 2175156, 2416840, 2718945, 3625260, 4350312, 5437890, 7250520, 10875780, 21751560]

約数ペア:

[(1, 21751560), (2, 10875780), (3, 7250520), (4, 5437890), (5, 4350312), (6, 3625260), (8, 2718945), (9, 2416840), (10, 2175156), (12, 1812630), (15, 1450104), (18, 1208420), (20, 1087578), (23, 945720), (24, 906315), (30, 725052), (36, 604210), (37, 587880), (40, 543789), (45, 483368), (46, 472860), (60, 362526), (69, 315240), (71, 306360), (72, 302105), (74, 293940), (90, 241684), (92, 236430), (111, 195960), (115, 189144), (120, 181263), (138, 157620), (142, 153180), (148, 146970), (180, 120842), (184, 118215), (185, 117576), (207, 105080), (213, 102120), (222, 97980), (230, 94572), (276, 78810), (284, 76590), (296, 73485), (333, 65320), (345, 63048), (355, 61272), (360, 60421), (370, 58788), (414, 52540), (426, 51060), (444, 48990), (460, 47286), (552, 39405), (555, 39192), (568, 38295), (639, 34040), (666, 32660), (690, 31524), (710, 30636), (740, 29394), (828, 26270), (851, 25560), (852, 25530), (888, 24495), (920, 23643), (1035, 21016), (1065, 20424), (1110, 19596), (1278, 17020), (1332, 16330), (1380, 15762), (1420, 15318), (1480, 14697), (1633, 13320), (1656, 13135), (1665, 13064), (1702, 12780), (1704, 12765), (2070, 10508), (2130, 10212), (2220, 9798), (2553, 8520), (2556, 8510), (2627, 8280), (2664, 8165), (2760, 7881), (2840, 7659), (3195, 6808), (3266, 6660), (3330, 6532), (3404, 6390), (4140, 5254), (4255, 5112), (4260, 5106), (4440, 4899)]