18951770

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 39004416

約数和(自身を除く): 20052646

約数列:

[1, 2, 5, 10, 17, 23, 34, 37, 46, 74, 85, 115, 131, 170, 185, 230, 262, 370, 391, 629, 655, 782, 851, 1258, 1310, 1702, 1955, 2227, 3013, 3145, 3910, 4255, 4454, 4847, 6026, 6290, 8510, 9694, 11135, 14467, 15065, 22270, 24235, 28934, 30130, 48470, 51221, 72335, 82399, 102442, 111481, 144670, 164798, 222962, 256105, 411995, 512210, 557405, 823990, 1114810, 1895177, 3790354, 9475885, 18951770]

約数ペア:

[(1, 18951770), (2, 9475885), (5, 3790354), (10, 1895177), (17, 1114810), (23, 823990), (34, 557405), (37, 512210), (46, 411995), (74, 256105), (85, 222962), (115, 164798), (131, 144670), (170, 111481), (185, 102442), (230, 82399), (262, 72335), (370, 51221), (391, 48470), (629, 30130), (655, 28934), (782, 24235), (851, 22270), (1258, 15065), (1310, 14467), (1702, 11135), (1955, 9694), (2227, 8510), (3013, 6290), (3145, 6026), (3910, 4847), (4255, 4454)]