20989849670

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1\times {\mathrm{3931}}^1$

素因数の和:4293

約数の個数: 64

約数和(自身を含む): 40257388800

約数和(自身を除く): 19267539130

約数列:

[1, 2, 5, 10, 19, 38, 95, 157, 179, 190, 314, 358, 785, 895, 1570, 1790, 2983, 3401, 3931, 5966, 6802, 7862, 14915, 17005, 19655, 28103, 29830, 34010, 39310, 56206, 74689, 140515, 149378, 281030, 373445, 533957, 617167, 703649, 746890, 1067914, 1234334, 1407298, 2669785, 3085835, 3518245, 5339570, 6171670, 7036490, 11726173, 13369331, 23452346, 26738662, 58630865, 66846655, 110472893, 117261730, 133693310, 220945786, 552364465, 1104728930, 2098984967, 4197969934, 10494924835, 20989849670]

約数ペア:

[(1, 20989849670), (2, 10494924835), (5, 4197969934), (10, 2098984967), (19, 1104728930), (38, 552364465), (95, 220945786), (157, 133693310), (179, 117261730), (190, 110472893), (314, 66846655), (358, 58630865), (785, 26738662), (895, 23452346), (1570, 13369331), (1790, 11726173), (2983, 7036490), (3401, 6171670), (3931, 5339570), (5966, 3518245), (6802, 3085835), (7862, 2669785), (14915, 1407298), (17005, 1234334), (19655, 1067914), (28103, 746890), (29830, 703649), (34010, 617167), (39310, 533957), (56206, 373445), (74689, 281030), (140515, 149378)]