25221975

素因数分解:

$3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 43821600

約数和(自身を除く): 18599625

約数列:

[1, 3, 5, 15, 25, 37, 61, 75, 111, 149, 183, 185, 305, 447, 555, 745, 915, 925, 1525, 2235, 2257, 2775, 3725, 4575, 5513, 6771, 9089, 11175, 11285, 16539, 27267, 27565, 33855, 45445, 56425, 82695, 136335, 137825, 169275, 227225, 336293, 413475, 681675, 1008879, 1681465, 5044395, 8407325, 25221975]

約数ペア:

[(1, 25221975), (3, 8407325), (5, 5044395), (15, 1681465), (25, 1008879), (37, 681675), (61, 413475), (75, 336293), (111, 227225), (149, 169275), (183, 137825), (185, 136335), (305, 82695), (447, 56425), (555, 45445), (745, 33855), (915, 27565), (925, 27267), (1525, 16539), (2235, 11285), (2257, 11175), (2775, 9089), (3725, 6771), (4575, 5513)]