21159765112

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{42979}}^1$

素因数の和:43124

約数の個数: 64

約数和(自身を含む): 43323840000

約数和(自身を除く): 22164074888

約数列:

[1, 2, 4, 8, 19, 38, 41, 76, 79, 82, 152, 158, 164, 316, 328, 632, 779, 1501, 1558, 3002, 3116, 3239, 6004, 6232, 6478, 12008, 12956, 25912, 42979, 61541, 85958, 123082, 171916, 246164, 343832, 492328, 816601, 1633202, 1762139, 3266404, 3395341, 3524278, 6532808, 6790682, 7048556, 13581364, 14097112, 27162728, 33480641, 64511479, 66961282, 129022958, 133922564, 139208981, 258045916, 267845128, 278417962, 516091832, 556835924, 1113671848, 2644970639, 5289941278, 10579882556, 21159765112]

約数ペア:

[(1, 21159765112), (2, 10579882556), (4, 5289941278), (8, 2644970639), (19, 1113671848), (38, 556835924), (41, 516091832), (76, 278417962), (79, 267845128), (82, 258045916), (152, 139208981), (158, 133922564), (164, 129022958), (316, 66961282), (328, 64511479), (632, 33480641), (779, 27162728), (1501, 14097112), (1558, 13581364), (3002, 7048556), (3116, 6790682), (3239, 6532808), (6004, 3524278), (6232, 3395341), (6478, 3266404), (12008, 1762139), (12956, 1633202), (25912, 816601), (42979, 492328), (61541, 343832), (85958, 246164), (123082, 171916)]