81808380

素因数分解:

$2^2\times 3^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:239

約数の個数: 168

約数和(自身を含む): 267356544

約数和(自身を除く): 185548164

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 31, 36, 45, 54, 60, 62, 81, 90, 93, 108, 124, 135, 155, 162, 180, 181, 186, 243, 270, 279, 310, 324, 362, 372, 405, 465, 486, 540, 543, 558, 620, 724, 729, 810, 837, 905, 930, 972, 1086, 1116, 1215, 1395, 1458, 1620, 1629, 1674, 1810, 1860, 2172, 2430, 2511, 2715, 2790, 2916, 3258, 3348, 3620, 3645, 4185, 4860, 4887, 5022, 5430, 5580, 5611, 6516, 7290, 7533, 8145, 8370, 9774, 10044, 10860, 11222, 12555, 14580, 14661, 15066, 16290, 16740, 16833, 19548, 22444, 22599, 24435, 25110, 28055, 29322, 30132, 32580, 33666, 37665, 43983, 45198, 48870, 50220, 50499, 56110, 58644, 67332, 73305, 75330, 84165, 87966, 90396, 97740, 100998, 112220, 112995, 131949, 146610, 150660, 151497, 168330, 175932, 201996, 219915, 225990, 252495, 263898, 293220, 302994, 336660, 439830, 451980, 454491, 504990, 527796, 605988, 659745, 757485, 879660, 908982, 1009980, 1319490, 1363473, 1514970, 1817964, 2272455, 2638980, 2726946, 3029940, 4090419, 4544910, 5453892, 6817365, 8180838, 9089820, 13634730, 16361676, 20452095, 27269460, 40904190, 81808380]

約数ペア:

[(1, 81808380), (2, 40904190), (3, 27269460), (4, 20452095), (5, 16361676), (6, 13634730), (9, 9089820), (10, 8180838), (12, 6817365), (15, 5453892), (18, 4544910), (20, 4090419), (27, 3029940), (30, 2726946), (31, 2638980), (36, 2272455), (45, 1817964), (54, 1514970), (60, 1363473), (62, 1319490), (81, 1009980), (90, 908982), (93, 879660), (108, 757485), (124, 659745), (135, 605988), (155, 527796), (162, 504990), (180, 454491), (181, 451980), (186, 439830), (243, 336660), (270, 302994), (279, 293220), (310, 263898), (324, 252495), (362, 225990), (372, 219915), (405, 201996), (465, 175932), (486, 168330), (540, 151497), (543, 150660), (558, 146610), (620, 131949), (724, 112995), (729, 112220), (810, 100998), (837, 97740), (905, 90396), (930, 87966), (972, 84165), (1086, 75330), (1116, 73305), (1215, 67332), (1395, 58644), (1458, 56110), (1620, 50499), (1629, 50220), (1674, 48870), (1810, 45198), (1860, 43983), (2172, 37665), (2430, 33666), (2511, 32580), (2715, 30132), (2790, 29322), (2916, 28055), (3258, 25110), (3348, 24435), (3620, 22599), (3645, 22444), (4185, 19548), (4860, 16833), (4887, 16740), (5022, 16290), (5430, 15066), (5580, 14661), (5611, 14580), (6516, 12555), (7290, 11222), (7533, 10860), (8145, 10044), (8370, 9774)]