21559125

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 42172416

約数和(自身を除く): 20613291

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 43, 75, 105, 125, 129, 175, 191, 215, 301, 375, 525, 573, 645, 875, 903, 955, 1075, 1337, 1505, 2625, 2865, 3225, 4011, 4515, 4775, 5375, 6685, 7525, 8213, 14325, 16125, 20055, 22575, 23875, 24639, 33425, 37625, 41065, 57491, 71625, 100275, 112875, 123195, 167125, 172473, 205325, 287455, 501375, 615975, 862365, 1026625, 1437275, 3079875, 4311825, 7186375, 21559125]

約数ペア:

[(1, 21559125), (3, 7186375), (5, 4311825), (7, 3079875), (15, 1437275), (21, 1026625), (25, 862365), (35, 615975), (43, 501375), (75, 287455), (105, 205325), (125, 172473), (129, 167125), (175, 123195), (191, 112875), (215, 100275), (301, 71625), (375, 57491), (525, 41065), (573, 37625), (645, 33425), (875, 24639), (903, 23875), (955, 22575), (1075, 20055), (1337, 16125), (1505, 14325), (2625, 8213), (2865, 7525), (3225, 6685), (4011, 5375), (4515, 4775)]