19937960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2297}}^1$

素因数の和:2346

約数の個数: 64

約数和(自身を含む): 52945920

約数和(自身を除く): 33007960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 2297, 4340, 4594, 8680, 9188, 11485, 16079, 18376, 22970, 32158, 45940, 64316, 71207, 80395, 91880, 128632, 142414, 160790, 284828, 321580, 356035, 498449, 569656, 643160, 712070, 996898, 1424140, 1993796, 2492245, 2848280, 3987592, 4984490, 9968980, 19937960]

約数ペア:

[(1, 19937960), (2, 9968980), (4, 4984490), (5, 3987592), (7, 2848280), (8, 2492245), (10, 1993796), (14, 1424140), (20, 996898), (28, 712070), (31, 643160), (35, 569656), (40, 498449), (56, 356035), (62, 321580), (70, 284828), (124, 160790), (140, 142414), (155, 128632), (217, 91880), (248, 80395), (280, 71207), (310, 64316), (434, 45940), (620, 32158), (868, 22970), (1085, 18376), (1240, 16079), (1736, 11485), (2170, 9188), (2297, 8680), (4340, 4594)]