18730520

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1$

素因数の和:348

約数の個数: 64

約数和(自身を含む): 44431200

約数和(自身を除く): 25700680

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 67, 116, 134, 145, 232, 241, 268, 290, 335, 482, 536, 580, 670, 964, 1160, 1205, 1340, 1928, 1943, 2410, 2680, 3886, 4820, 6989, 7772, 9640, 9715, 13978, 15544, 16147, 19430, 27956, 32294, 34945, 38860, 55912, 64588, 69890, 77720, 80735, 129176, 139780, 161470, 279560, 322940, 468263, 645880, 936526, 1873052, 2341315, 3746104, 4682630, 9365260, 18730520]

約数ペア:

[(1, 18730520), (2, 9365260), (4, 4682630), (5, 3746104), (8, 2341315), (10, 1873052), (20, 936526), (29, 645880), (40, 468263), (58, 322940), (67, 279560), (116, 161470), (134, 139780), (145, 129176), (232, 80735), (241, 77720), (268, 69890), (290, 64588), (335, 55912), (482, 38860), (536, 34945), (580, 32294), (670, 27956), (964, 19430), (1160, 16147), (1205, 15544), (1340, 13978), (1928, 9715), (1943, 9640), (2410, 7772), (2680, 6989), (3886, 4820)]