28722340

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{179}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 62052480

約数和(自身を除く): 33330140

約数列:

[1, 2, 4, 5, 10, 20, 71, 113, 142, 179, 226, 284, 355, 358, 452, 565, 710, 716, 895, 1130, 1420, 1790, 2260, 3580, 8023, 12709, 16046, 20227, 25418, 32092, 40115, 40454, 50836, 63545, 80230, 80908, 101135, 127090, 160460, 202270, 254180, 404540, 1436117, 2872234, 5744468, 7180585, 14361170, 28722340]

約数ペア:

[(1, 28722340), (2, 14361170), (4, 7180585), (5, 5744468), (10, 2872234), (20, 1436117), (71, 404540), (113, 254180), (142, 202270), (179, 160460), (226, 127090), (284, 101135), (355, 80908), (358, 80230), (452, 63545), (565, 50836), (710, 40454), (716, 40115), (895, 32092), (1130, 25418), (1420, 20227), (1790, 16046), (2260, 12709), (3580, 8023)]