81945400

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{13217}}^1$

素因数の和:13264

約数の個数: 48

約数和(自身を含む): 196683840

約数和(自身を除く): 114738440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 6200, 13217, 26434, 52868, 66085, 105736, 132170, 264340, 330425, 409727, 528680, 660850, 819454, 1321700, 1638908, 2048635, 2643400, 3277816, 4097270, 8194540, 10243175, 16389080, 20486350, 40972700, 81945400]

約数ペア:

[(1, 81945400), (2, 40972700), (4, 20486350), (5, 16389080), (8, 10243175), (10, 8194540), (20, 4097270), (25, 3277816), (31, 2643400), (40, 2048635), (50, 1638908), (62, 1321700), (100, 819454), (124, 660850), (155, 528680), (200, 409727), (248, 330425), (310, 264340), (620, 132170), (775, 105736), (1240, 66085), (1550, 52868), (3100, 26434), (6200, 13217)]