20921296280

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{2953}}^1\times {\mathrm{4787}}^1$

素因数の和:7788

約数の個数: 64

約数和(自身を含む): 48371631840

約数和(自身を除く): 27450335560

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 2953, 4787, 5906, 9574, 11812, 14765, 19148, 23624, 23935, 29530, 38296, 47870, 59060, 95740, 109261, 118120, 177119, 191480, 218522, 354238, 437044, 546305, 708476, 874088, 885595, 1092610, 1416952, 1771190, 2185220, 3542380, 4370440, 7084760, 14136011, 28272022, 56544044, 70680055, 113088088, 141360110, 282720220, 523032407, 565440440, 1046064814, 2092129628, 2615162035, 4184259256, 5230324070, 10460648140, 20921296280]

約数ペア:

[(1, 20921296280), (2, 10460648140), (4, 5230324070), (5, 4184259256), (8, 2615162035), (10, 2092129628), (20, 1046064814), (37, 565440440), (40, 523032407), (74, 282720220), (148, 141360110), (185, 113088088), (296, 70680055), (370, 56544044), (740, 28272022), (1480, 14136011), (2953, 7084760), (4787, 4370440), (5906, 3542380), (9574, 2185220), (11812, 1771190), (14765, 1416952), (19148, 1092610), (23624, 885595), (23935, 874088), (29530, 708476), (38296, 546305), (47870, 437044), (59060, 354238), (95740, 218522), (109261, 191480), (118120, 177119)]