21165170

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 44434656

約数和(自身を除く): 23269486

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 61, 65, 85, 122, 130, 157, 170, 221, 305, 314, 442, 610, 785, 793, 1037, 1105, 1570, 1586, 2041, 2074, 2210, 2669, 3965, 4082, 5185, 5338, 7930, 9577, 10205, 10370, 13345, 13481, 19154, 20410, 26690, 26962, 34697, 47885, 67405, 69394, 95770, 124501, 134810, 162809, 173485, 249002, 325618, 346970, 622505, 814045, 1245010, 1628090, 2116517, 4233034, 10582585, 21165170]

約数ペア:

[(1, 21165170), (2, 10582585), (5, 4233034), (10, 2116517), (13, 1628090), (17, 1245010), (26, 814045), (34, 622505), (61, 346970), (65, 325618), (85, 249002), (122, 173485), (130, 162809), (157, 134810), (170, 124501), (221, 95770), (305, 69394), (314, 67405), (442, 47885), (610, 34697), (785, 26962), (793, 26690), (1037, 20410), (1105, 19154), (1570, 13481), (1586, 13345), (2041, 10370), (2074, 10205), (2210, 9577), (2669, 7930), (3965, 5338), (4082, 5185)]