20989794

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{907}}^1$

素因数の和:967

約数の個数: 64

約数和(自身を含む): 52300800

約数和(自身を除く): 31311006

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 29, 38, 42, 57, 58, 87, 114, 133, 174, 203, 266, 399, 406, 551, 609, 798, 907, 1102, 1218, 1653, 1814, 2721, 3306, 3857, 5442, 6349, 7714, 11571, 12698, 17233, 19047, 23142, 26303, 34466, 38094, 51699, 52606, 78909, 103398, 120631, 157818, 184121, 241262, 361893, 368242, 499757, 552363, 723786, 999514, 1104726, 1499271, 2998542, 3498299, 6996598, 10494897, 20989794]

約数ペア:

[(1, 20989794), (2, 10494897), (3, 6996598), (6, 3498299), (7, 2998542), (14, 1499271), (19, 1104726), (21, 999514), (29, 723786), (38, 552363), (42, 499757), (57, 368242), (58, 361893), (87, 241262), (114, 184121), (133, 157818), (174, 120631), (203, 103398), (266, 78909), (399, 52606), (406, 51699), (551, 38094), (609, 34466), (798, 26303), (907, 23142), (1102, 19047), (1218, 17233), (1653, 12698), (1814, 11571), (2721, 7714), (3306, 6349), (3857, 5442)]