81109860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:478

約数の個数: 144

約数和(自身を含む): 259479360

約数和(自身を除く): 178369500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 76, 78, 95, 114, 130, 156, 169, 190, 195, 228, 247, 260, 285, 338, 380, 390, 421, 494, 507, 570, 676, 741, 780, 842, 845, 988, 1014, 1140, 1235, 1263, 1482, 1684, 1690, 2028, 2105, 2470, 2526, 2535, 2964, 3211, 3380, 3705, 4210, 4940, 5052, 5070, 5473, 6315, 6422, 7410, 7999, 8420, 9633, 10140, 10946, 12630, 12844, 14820, 15998, 16055, 16419, 19266, 21892, 23997, 25260, 27365, 31996, 32110, 32838, 38532, 39995, 47994, 48165, 54730, 64220, 65676, 71149, 79990, 82095, 95988, 96330, 103987, 109460, 119985, 142298, 159980, 164190, 192660, 207974, 213447, 239970, 284596, 311961, 328380, 355745, 415948, 426894, 479940, 519935, 623922, 711490, 853788, 1039870, 1067235, 1247844, 1351831, 1422980, 1559805, 2079740, 2134470, 2703662, 3119610, 4055493, 4268940, 5407324, 6239220, 6759155, 8110986, 13518310, 16221972, 20277465, 27036620, 40554930, 81109860]

約数ペア:

[(1, 81109860), (2, 40554930), (3, 27036620), (4, 20277465), (5, 16221972), (6, 13518310), (10, 8110986), (12, 6759155), (13, 6239220), (15, 5407324), (19, 4268940), (20, 4055493), (26, 3119610), (30, 2703662), (38, 2134470), (39, 2079740), (52, 1559805), (57, 1422980), (60, 1351831), (65, 1247844), (76, 1067235), (78, 1039870), (95, 853788), (114, 711490), (130, 623922), (156, 519935), (169, 479940), (190, 426894), (195, 415948), (228, 355745), (247, 328380), (260, 311961), (285, 284596), (338, 239970), (380, 213447), (390, 207974), (421, 192660), (494, 164190), (507, 159980), (570, 142298), (676, 119985), (741, 109460), (780, 103987), (842, 96330), (845, 95988), (988, 82095), (1014, 79990), (1140, 71149), (1235, 65676), (1263, 64220), (1482, 54730), (1684, 48165), (1690, 47994), (2028, 39995), (2105, 38532), (2470, 32838), (2526, 32110), (2535, 31996), (2964, 27365), (3211, 25260), (3380, 23997), (3705, 21892), (4210, 19266), (4940, 16419), (5052, 16055), (5070, 15998), (5473, 14820), (6315, 12844), (6422, 12630), (7410, 10946), (7999, 10140), (8420, 9633)]