81109980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64373}}^1$

素因数の和:64395

約数の個数: 72

約数和(自身を含む): 281185632

約数和(自身を除く): 200075652

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, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 64373, 128746, 193119, 257492, 321865, 386238, 450611, 579357, 643730, 772476, 901222, 965595, 1158714, 1287460, 1351833, 1802444, 1931190, 2253055, 2317428, 2703666, 2896785, 3862380, 4055499, 4506110, 5407332, 5793570, 6759165, 8110998, 9012220, 11587140, 13518330, 16221996, 20277495, 27036660, 40554990, 81109980]

約数ペア:

[(1, 81109980), (2, 40554990), (3, 27036660), (4, 20277495), (5, 16221996), (6, 13518330), (7, 11587140), (9, 9012220), (10, 8110998), (12, 6759165), (14, 5793570), (15, 5407332), (18, 4506110), (20, 4055499), (21, 3862380), (28, 2896785), (30, 2703666), (35, 2317428), (36, 2253055), (42, 1931190), (45, 1802444), (60, 1351833), (63, 1287460), (70, 1158714), (84, 965595), (90, 901222), (105, 772476), (126, 643730), (140, 579357), (180, 450611), (210, 386238), (252, 321865), (315, 257492), (420, 193119), (630, 128746), (1260, 64373)]