21901928

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{1213}}^1$

素因数の和:1317

約数の個数: 32

約数和(自身を含む): 42902760

約数和(自身を除く): 21000832

約数列:

[1, 2, 4, 8, 37, 61, 74, 122, 148, 244, 296, 488, 1213, 2257, 2426, 4514, 4852, 9028, 9704, 18056, 44881, 73993, 89762, 147986, 179524, 295972, 359048, 591944, 2737741, 5475482, 10950964, 21901928]

約数ペア:

[(1, 21901928), (2, 10950964), (4, 5475482), (8, 2737741), (37, 591944), (61, 359048), (74, 295972), (122, 179524), (148, 147986), (244, 89762), (296, 73993), (488, 44881), (1213, 18056), (2257, 9704), (2426, 9028), (4514, 4852)]