20888240

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15359}}^1$

素因数の和:15389

約数の個数: 40

約数和(自身を含む): 51425280

約数和(自身を除く): 30537040

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15359, 30718, 61436, 76795, 122872, 153590, 245744, 261103, 307180, 522206, 614360, 1044412, 1228720, 1305515, 2088824, 2611030, 4177648, 5222060, 10444120, 20888240]

約数ペア:

[(1, 20888240), (2, 10444120), (4, 5222060), (5, 4177648), (8, 2611030), (10, 2088824), (16, 1305515), (17, 1228720), (20, 1044412), (34, 614360), (40, 522206), (68, 307180), (80, 261103), (85, 245744), (136, 153590), (170, 122872), (272, 76795), (340, 61436), (680, 30718), (1360, 15359)]