64561720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{179}}^1$

素因数の和:388

約数の個数: 64

約数和(自身を含む): 149299200

約数和(自身を除く): 84737480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 127, 142, 179, 254, 284, 355, 358, 508, 568, 635, 710, 716, 895, 1016, 1270, 1420, 1432, 1790, 2540, 2840, 3580, 5080, 7160, 9017, 12709, 18034, 22733, 25418, 36068, 45085, 45466, 50836, 63545, 72136, 90170, 90932, 101672, 113665, 127090, 180340, 181864, 227330, 254180, 360680, 454660, 508360, 909320, 1614043, 3228086, 6456172, 8070215, 12912344, 16140430, 32280860, 64561720]

約数ペア:

[(1, 64561720), (2, 32280860), (4, 16140430), (5, 12912344), (8, 8070215), (10, 6456172), (20, 3228086), (40, 1614043), (71, 909320), (127, 508360), (142, 454660), (179, 360680), (254, 254180), (284, 227330), (355, 181864), (358, 180340), (508, 127090), (568, 113665), (635, 101672), (710, 90932), (716, 90170), (895, 72136), (1016, 63545), (1270, 50836), (1420, 45466), (1432, 45085), (1790, 36068), (2540, 25418), (2840, 22733), (3580, 18034), (5080, 12709), (7160, 9017)]