21018930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{233}}^1$

素因数の和:371

約数の個数: 64

約数和(自身を含む): 52835328

約数和(自身を除く): 31816398

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 97, 155, 186, 194, 233, 291, 310, 465, 466, 485, 582, 699, 930, 970, 1165, 1398, 1455, 2330, 2910, 3007, 3495, 6014, 6990, 7223, 9021, 14446, 15035, 18042, 21669, 22601, 30070, 36115, 43338, 45105, 45202, 67803, 72230, 90210, 108345, 113005, 135606, 216690, 226010, 339015, 678030, 700631, 1401262, 2101893, 3503155, 4203786, 7006310, 10509465, 21018930]

約数ペア:

[(1, 21018930), (2, 10509465), (3, 7006310), (5, 4203786), (6, 3503155), (10, 2101893), (15, 1401262), (30, 700631), (31, 678030), (62, 339015), (93, 226010), (97, 216690), (155, 135606), (186, 113005), (194, 108345), (233, 90210), (291, 72230), (310, 67803), (465, 45202), (466, 45105), (485, 43338), (582, 36115), (699, 30070), (930, 22601), (970, 21669), (1165, 18042), (1398, 15035), (1455, 14446), (2330, 9021), (2910, 7223), (3007, 6990), (3495, 6014)]