496667720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{977}}^1$

素因数の和:1238

約数の個数: 64

約数和(自身を含む): 1140739200

約数和(自身を除く): 644071480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 179, 284, 355, 358, 568, 710, 716, 895, 977, 1420, 1432, 1790, 1954, 2840, 3580, 3908, 4885, 7160, 7816, 9770, 12709, 19540, 25418, 39080, 50836, 63545, 69367, 101672, 127090, 138734, 174883, 254180, 277468, 346835, 349766, 508360, 554936, 693670, 699532, 874415, 1387340, 1399064, 1748830, 2774680, 3497660, 6995320, 12416693, 24833386, 49666772, 62083465, 99333544, 124166930, 248333860, 496667720]

約数ペア:

[(1, 496667720), (2, 248333860), (4, 124166930), (5, 99333544), (8, 62083465), (10, 49666772), (20, 24833386), (40, 12416693), (71, 6995320), (142, 3497660), (179, 2774680), (284, 1748830), (355, 1399064), (358, 1387340), (568, 874415), (710, 699532), (716, 693670), (895, 554936), (977, 508360), (1420, 349766), (1432, 346835), (1790, 277468), (1954, 254180), (2840, 174883), (3580, 138734), (3908, 127090), (4885, 101672), (7160, 69367), (7816, 63545), (9770, 50836), (12709, 39080), (19540, 25418)]