81649620

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3877}}^1$

素因数の和:3911

約数の個数: 120

約数和(自身を含む): 275911944

約数和(自身を除く): 194262324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 81, 90, 108, 117, 130, 135, 156, 162, 180, 195, 234, 260, 270, 324, 351, 390, 405, 468, 540, 585, 702, 780, 810, 1053, 1170, 1404, 1620, 1755, 2106, 2340, 3510, 3877, 4212, 5265, 7020, 7754, 10530, 11631, 15508, 19385, 21060, 23262, 34893, 38770, 46524, 50401, 58155, 69786, 77540, 100802, 104679, 116310, 139572, 151203, 174465, 201604, 209358, 232620, 252005, 302406, 314037, 348930, 418716, 453609, 504010, 523395, 604812, 628074, 697860, 756015, 907218, 1008020, 1046790, 1256148, 1360827, 1512030, 1570185, 1814436, 2093580, 2268045, 2721654, 3024060, 3140370, 4082481, 4536090, 5443308, 6280740, 6804135, 8164962, 9072180, 13608270, 16329924, 20412405, 27216540, 40824810, 81649620]

約数ペア:

[(1, 81649620), (2, 40824810), (3, 27216540), (4, 20412405), (5, 16329924), (6, 13608270), (9, 9072180), (10, 8164962), (12, 6804135), (13, 6280740), (15, 5443308), (18, 4536090), (20, 4082481), (26, 3140370), (27, 3024060), (30, 2721654), (36, 2268045), (39, 2093580), (45, 1814436), (52, 1570185), (54, 1512030), (60, 1360827), (65, 1256148), (78, 1046790), (81, 1008020), (90, 907218), (108, 756015), (117, 697860), (130, 628074), (135, 604812), (156, 523395), (162, 504010), (180, 453609), (195, 418716), (234, 348930), (260, 314037), (270, 302406), (324, 252005), (351, 232620), (390, 209358), (405, 201604), (468, 174465), (540, 151203), (585, 139572), (702, 116310), (780, 104679), (810, 100802), (1053, 77540), (1170, 69786), (1404, 58155), (1620, 50401), (1755, 46524), (2106, 38770), (2340, 34893), (3510, 23262), (3877, 21060), (4212, 19385), (5265, 15508), (7020, 11631), (7754, 10530)]