21596440

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 50621760

約数和(自身を除く): 29025320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 61, 106, 122, 167, 212, 244, 265, 305, 334, 424, 488, 530, 610, 668, 835, 1060, 1220, 1336, 1670, 2120, 2440, 3233, 3340, 6466, 6680, 8851, 10187, 12932, 16165, 17702, 20374, 25864, 32330, 35404, 40748, 44255, 50935, 64660, 70808, 81496, 88510, 101870, 129320, 177020, 203740, 354040, 407480, 539911, 1079822, 2159644, 2699555, 4319288, 5399110, 10798220, 21596440]

約数ペア:

[(1, 21596440), (2, 10798220), (4, 5399110), (5, 4319288), (8, 2699555), (10, 2159644), (20, 1079822), (40, 539911), (53, 407480), (61, 354040), (106, 203740), (122, 177020), (167, 129320), (212, 101870), (244, 88510), (265, 81496), (305, 70808), (334, 64660), (424, 50935), (488, 44255), (530, 40748), (610, 35404), (668, 32330), (835, 25864), (1060, 20374), (1220, 17702), (1336, 16165), (1670, 12932), (2120, 10187), (2440, 8851), (3233, 6680), (3340, 6466)]