81298980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{571}}^1$

素因数の和:706

約数の個数: 144

約数和(自身を含む): 284828544

約数和(自身を除く): 203529564

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 113, 126, 140, 180, 210, 226, 252, 315, 339, 420, 452, 565, 571, 630, 678, 791, 1017, 1130, 1142, 1260, 1356, 1582, 1695, 1713, 2034, 2260, 2284, 2373, 2855, 3164, 3390, 3426, 3955, 3997, 4068, 4746, 5085, 5139, 5710, 6780, 6852, 7119, 7910, 7994, 8565, 9492, 10170, 10278, 11420, 11865, 11991, 14238, 15820, 15988, 17130, 19985, 20340, 20556, 23730, 23982, 25695, 28476, 34260, 35595, 35973, 39970, 47460, 47964, 51390, 59955, 64523, 71190, 71946, 79940, 102780, 119910, 129046, 142380, 143892, 179865, 193569, 239820, 258092, 322615, 359730, 387138, 451661, 580707, 645230, 719460, 774276, 903322, 967845, 1161414, 1290460, 1354983, 1806644, 1935690, 2258305, 2322828, 2709966, 2903535, 3871380, 4064949, 4516610, 5419932, 5807070, 6774915, 8129898, 9033220, 11614140, 13549830, 16259796, 20324745, 27099660, 40649490, 81298980]

約数ペア:

[(1, 81298980), (2, 40649490), (3, 27099660), (4, 20324745), (5, 16259796), (6, 13549830), (7, 11614140), (9, 9033220), (10, 8129898), (12, 6774915), (14, 5807070), (15, 5419932), (18, 4516610), (20, 4064949), (21, 3871380), (28, 2903535), (30, 2709966), (35, 2322828), (36, 2258305), (42, 1935690), (45, 1806644), (60, 1354983), (63, 1290460), (70, 1161414), (84, 967845), (90, 903322), (105, 774276), (113, 719460), (126, 645230), (140, 580707), (180, 451661), (210, 387138), (226, 359730), (252, 322615), (315, 258092), (339, 239820), (420, 193569), (452, 179865), (565, 143892), (571, 142380), (630, 129046), (678, 119910), (791, 102780), (1017, 79940), (1130, 71946), (1142, 71190), (1260, 64523), (1356, 59955), (1582, 51390), (1695, 47964), (1713, 47460), (2034, 39970), (2260, 35973), (2284, 35595), (2373, 34260), (2855, 28476), (3164, 25695), (3390, 23982), (3426, 23730), (3955, 20556), (3997, 20340), (4068, 19985), (4746, 17130), (5085, 15988), (5139, 15820), (5710, 14238), (6780, 11991), (6852, 11865), (7119, 11420), (7910, 10278), (7994, 10170), (8565, 9492)]