21858100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{641}}^1$

素因数の和:697

約数の個数: 72

約数和(自身を含む): 53496576

約数和(自身を除く): 31638476

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 31, 44, 50, 55, 62, 100, 110, 124, 155, 220, 275, 310, 341, 550, 620, 641, 682, 775, 1100, 1282, 1364, 1550, 1705, 2564, 3100, 3205, 3410, 6410, 6820, 7051, 8525, 12820, 14102, 16025, 17050, 19871, 28204, 32050, 34100, 35255, 39742, 64100, 70510, 79484, 99355, 141020, 176275, 198710, 218581, 352550, 397420, 437162, 496775, 705100, 874324, 993550, 1092905, 1987100, 2185810, 4371620, 5464525, 10929050, 21858100]

約数ペア:

[(1, 21858100), (2, 10929050), (4, 5464525), (5, 4371620), (10, 2185810), (11, 1987100), (20, 1092905), (22, 993550), (25, 874324), (31, 705100), (44, 496775), (50, 437162), (55, 397420), (62, 352550), (100, 218581), (110, 198710), (124, 176275), (155, 141020), (220, 99355), (275, 79484), (310, 70510), (341, 64100), (550, 39742), (620, 35255), (641, 34100), (682, 32050), (775, 28204), (1100, 19871), (1282, 17050), (1364, 16025), (1550, 14102), (1705, 12820), (2564, 8525), (3100, 7051), (3205, 6820), (3410, 6410)]