28028980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{773}}^1$

素因数の和:833

約数の個数: 72

約数和(自身を含む): 70412328

約数和(自身を除く): 42383348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 245, 259, 370, 490, 518, 740, 773, 980, 1036, 1295, 1546, 1813, 2590, 3092, 3626, 3865, 5180, 5411, 7252, 7730, 9065, 10822, 15460, 18130, 21644, 27055, 28601, 36260, 37877, 54110, 57202, 75754, 108220, 114404, 143005, 151508, 189385, 200207, 286010, 378770, 400414, 572020, 757540, 800828, 1001035, 1401449, 2002070, 2802898, 4004140, 5605796, 7007245, 14014490, 28028980]

約数ペア:

[(1, 28028980), (2, 14014490), (4, 7007245), (5, 5605796), (7, 4004140), (10, 2802898), (14, 2002070), (20, 1401449), (28, 1001035), (35, 800828), (37, 757540), (49, 572020), (70, 400414), (74, 378770), (98, 286010), (140, 200207), (148, 189385), (185, 151508), (196, 143005), (245, 114404), (259, 108220), (370, 75754), (490, 57202), (518, 54110), (740, 37877), (773, 36260), (980, 28601), (1036, 27055), (1295, 21644), (1546, 18130), (1813, 15460), (2590, 10822), (3092, 9065), (3626, 7730), (3865, 7252), (5180, 5411)]