81967860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1523}}^1$

素因数の和:1574

約数の個数: 144

約数和(自身を含む): 279586944

約数和(自身を除く): 197619084

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 23, 26, 30, 36, 39, 45, 46, 52, 60, 65, 69, 78, 90, 92, 115, 117, 130, 138, 156, 180, 195, 207, 230, 234, 260, 276, 299, 345, 390, 414, 460, 468, 585, 598, 690, 780, 828, 897, 1035, 1170, 1196, 1380, 1495, 1523, 1794, 2070, 2340, 2691, 2990, 3046, 3588, 4140, 4485, 4569, 5382, 5980, 6092, 7615, 8970, 9138, 10764, 13455, 13707, 15230, 17940, 18276, 19799, 22845, 26910, 27414, 30460, 35029, 39598, 45690, 53820, 54828, 59397, 68535, 70058, 79196, 91380, 98995, 105087, 118794, 137070, 140116, 175145, 178191, 197990, 210174, 237588, 274140, 296985, 315261, 350290, 356382, 395980, 420348, 455377, 525435, 593970, 630522, 700580, 712764, 890955, 910754, 1050870, 1187940, 1261044, 1366131, 1576305, 1781910, 1821508, 2101740, 2276885, 2732262, 3152610, 3563820, 4098393, 4553770, 5464524, 6305220, 6830655, 8196786, 9107540, 13661310, 16393572, 20491965, 27322620, 40983930, 81967860]

約数ペア:

[(1, 81967860), (2, 40983930), (3, 27322620), (4, 20491965), (5, 16393572), (6, 13661310), (9, 9107540), (10, 8196786), (12, 6830655), (13, 6305220), (15, 5464524), (18, 4553770), (20, 4098393), (23, 3563820), (26, 3152610), (30, 2732262), (36, 2276885), (39, 2101740), (45, 1821508), (46, 1781910), (52, 1576305), (60, 1366131), (65, 1261044), (69, 1187940), (78, 1050870), (90, 910754), (92, 890955), (115, 712764), (117, 700580), (130, 630522), (138, 593970), (156, 525435), (180, 455377), (195, 420348), (207, 395980), (230, 356382), (234, 350290), (260, 315261), (276, 296985), (299, 274140), (345, 237588), (390, 210174), (414, 197990), (460, 178191), (468, 175145), (585, 140116), (598, 137070), (690, 118794), (780, 105087), (828, 98995), (897, 91380), (1035, 79196), (1170, 70058), (1196, 68535), (1380, 59397), (1495, 54828), (1523, 53820), (1794, 45690), (2070, 39598), (2340, 35029), (2691, 30460), (2990, 27414), (3046, 26910), (3588, 22845), (4140, 19799), (4485, 18276), (4569, 17940), (5382, 15230), (5980, 13707), (6092, 13455), (7615, 10764), (8970, 9138)]