20851804240

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{356563}}^1$

素因数の和:356636

約数の個数: 80

約数和(自身を含む): 52526155968

約数和(自身を除く): 31674351728

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 43, 68, 80, 85, 86, 136, 170, 172, 215, 272, 340, 344, 430, 680, 688, 731, 860, 1360, 1462, 1720, 2924, 3440, 3655, 5848, 7310, 11696, 14620, 29240, 58480, 356563, 713126, 1426252, 1782815, 2852504, 3565630, 5705008, 6061571, 7131260, 12123142, 14262520, 15332209, 24246284, 28525040, 30307855, 30664418, 48492568, 60615710, 61328836, 76661045, 96985136, 121231420, 122657672, 153322090, 242462840, 245315344, 260647553, 306644180, 484925680, 521295106, 613288360, 1042590212, 1226576720, 1303237765, 2085180424, 2606475530, 4170360848, 5212951060, 10425902120, 20851804240]

約数ペア:

[(1, 20851804240), (2, 10425902120), (4, 5212951060), (5, 4170360848), (8, 2606475530), (10, 2085180424), (16, 1303237765), (17, 1226576720), (20, 1042590212), (34, 613288360), (40, 521295106), (43, 484925680), (68, 306644180), (80, 260647553), (85, 245315344), (86, 242462840), (136, 153322090), (170, 122657672), (172, 121231420), (215, 96985136), (272, 76661045), (340, 61328836), (344, 60615710), (430, 48492568), (680, 30664418), (688, 30307855), (731, 28525040), (860, 24246284), (1360, 15332209), (1462, 14262520), (1720, 12123142), (2924, 7131260), (3440, 6061571), (3655, 5705008), (5848, 3565630), (7310, 2852504), (11696, 1782815), (14620, 1426252), (29240, 713126), (58480, 356563)]