21480830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:585

約数の個数: 64

約数和(自身を含む): 48107520

約数和(自身を除く): 26626690

約数列:

[1, 2, 5, 7, 10, 14, 19, 31, 35, 38, 62, 70, 95, 133, 155, 190, 217, 266, 310, 434, 521, 589, 665, 1042, 1085, 1178, 1330, 2170, 2605, 2945, 3647, 4123, 5210, 5890, 7294, 8246, 9899, 16151, 18235, 19798, 20615, 32302, 36470, 41230, 49495, 69293, 80755, 98990, 113057, 138586, 161510, 226114, 306869, 346465, 565285, 613738, 692930, 1130570, 1534345, 2148083, 3068690, 4296166, 10740415, 21480830]

約数ペア:

[(1, 21480830), (2, 10740415), (5, 4296166), (7, 3068690), (10, 2148083), (14, 1534345), (19, 1130570), (31, 692930), (35, 613738), (38, 565285), (62, 346465), (70, 306869), (95, 226114), (133, 161510), (155, 138586), (190, 113057), (217, 98990), (266, 80755), (310, 69293), (434, 49495), (521, 41230), (589, 36470), (665, 32302), (1042, 20615), (1085, 19798), (1178, 18235), (1330, 16151), (2170, 9899), (2605, 8246), (2945, 7294), (3647, 5890), (4123, 5210)]