21998504

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{223}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 26385496

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 59, 76, 88, 118, 152, 209, 223, 236, 418, 446, 472, 649, 836, 892, 1121, 1298, 1672, 1784, 2242, 2453, 2596, 4237, 4484, 4906, 5192, 8474, 8968, 9812, 12331, 13157, 16948, 19624, 24662, 26314, 33896, 46607, 49324, 52628, 93214, 98648, 105256, 144727, 186428, 249983, 289454, 372856, 499966, 578908, 999932, 1157816, 1999864, 2749813, 5499626, 10999252, 21998504]

約数ペア:

[(1, 21998504), (2, 10999252), (4, 5499626), (8, 2749813), (11, 1999864), (19, 1157816), (22, 999932), (38, 578908), (44, 499966), (59, 372856), (76, 289454), (88, 249983), (118, 186428), (152, 144727), (209, 105256), (223, 98648), (236, 93214), (418, 52628), (446, 49324), (472, 46607), (649, 33896), (836, 26314), (892, 24662), (1121, 19624), (1298, 16948), (1672, 13157), (1784, 12331), (2242, 9812), (2453, 8968), (2596, 8474), (4237, 5192), (4484, 4906)]