9997900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 24217200

約数和(自身を除く): 14219300

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 61, 100, 110, 122, 149, 220, 244, 275, 298, 305, 550, 596, 610, 671, 745, 1100, 1220, 1342, 1490, 1525, 1639, 2684, 2980, 3050, 3278, 3355, 3725, 6100, 6556, 6710, 7450, 8195, 9089, 13420, 14900, 16390, 16775, 18178, 32780, 33550, 36356, 40975, 45445, 67100, 81950, 90890, 99979, 163900, 181780, 199958, 227225, 399916, 454450, 499895, 908900, 999790, 1999580, 2499475, 4998950, 9997900]

約数ペア:

[(1, 9997900), (2, 4998950), (4, 2499475), (5, 1999580), (10, 999790), (11, 908900), (20, 499895), (22, 454450), (25, 399916), (44, 227225), (50, 199958), (55, 181780), (61, 163900), (100, 99979), (110, 90890), (122, 81950), (149, 67100), (220, 45445), (244, 40975), (275, 36356), (298, 33550), (305, 32780), (550, 18178), (596, 16775), (610, 16390), (671, 14900), (745, 13420), (1100, 9089), (1220, 8195), (1342, 7450), (1490, 6710), (1525, 6556), (1639, 6100), (2684, 3725), (2980, 3355), (3050, 3278)]