64531900

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:295

約数の個数: 72

約数和(自身を含む): 145303200

約数和(自身を除く): 80771300

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 71, 100, 122, 142, 149, 244, 284, 298, 305, 355, 596, 610, 710, 745, 1220, 1420, 1490, 1525, 1775, 2980, 3050, 3550, 3725, 4331, 6100, 7100, 7450, 8662, 9089, 10579, 14900, 17324, 18178, 21158, 21655, 36356, 42316, 43310, 45445, 52895, 86620, 90890, 105790, 108275, 181780, 211580, 216550, 227225, 264475, 433100, 454450, 528950, 645319, 908900, 1057900, 1290638, 2581276, 3226595, 6453190, 12906380, 16132975, 32265950, 64531900]

約数ペア:

[(1, 64531900), (2, 32265950), (4, 16132975), (5, 12906380), (10, 6453190), (20, 3226595), (25, 2581276), (50, 1290638), (61, 1057900), (71, 908900), (100, 645319), (122, 528950), (142, 454450), (149, 433100), (244, 264475), (284, 227225), (298, 216550), (305, 211580), (355, 181780), (596, 108275), (610, 105790), (710, 90890), (745, 86620), (1220, 52895), (1420, 45445), (1490, 43310), (1525, 42316), (1775, 36356), (2980, 21655), (3050, 21158), (3550, 18178), (3725, 17324), (4331, 14900), (6100, 10579), (7100, 9089), (7450, 8662)]