21795540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27943}}^1$

素因数の和:27968

約数の個数: 48

約数和(自身を含む): 65724288

約数和(自身を除く): 43928748

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27943, 55886, 83829, 111772, 139715, 167658, 279430, 335316, 363259, 419145, 558860, 726518, 838290, 1089777, 1453036, 1676580, 1816295, 2179554, 3632590, 4359108, 5448885, 7265180, 10897770, 21795540]

約数ペア:

[(1, 21795540), (2, 10897770), (3, 7265180), (4, 5448885), (5, 4359108), (6, 3632590), (10, 2179554), (12, 1816295), (13, 1676580), (15, 1453036), (20, 1089777), (26, 838290), (30, 726518), (39, 558860), (52, 419145), (60, 363259), (65, 335316), (78, 279430), (130, 167658), (156, 139715), (195, 111772), (260, 83829), (390, 55886), (780, 27943)]