221216520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{677}}^1$

素因数の和:1087

約数の個数: 128

約数和(自身を含む): 761529600

約数和(自身を除く): 540313080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 389, 420, 677, 778, 840, 1167, 1354, 1556, 1945, 2031, 2334, 2708, 2723, 3112, 3385, 3890, 4062, 4668, 4739, 5416, 5446, 5835, 6770, 7780, 8124, 8169, 9336, 9478, 10155, 10892, 11670, 13540, 13615, 14217, 15560, 16248, 16338, 18956, 20310, 21784, 23340, 23695, 27080, 27230, 28434, 32676, 37912, 40620, 40845, 46680, 47390, 54460, 56868, 65352, 71085, 81240, 81690, 94780, 108920, 113736, 142170, 163380, 189560, 263353, 284340, 326760, 526706, 568680, 790059, 1053412, 1316765, 1580118, 1843471, 2106824, 2633530, 3160236, 3686942, 3950295, 5267060, 5530413, 6320472, 7373884, 7900590, 9217355, 10534120, 11060826, 14747768, 15801180, 18434710, 22121652, 27652065, 31602360, 36869420, 44243304, 55304130, 73738840, 110608260, 221216520]

約数ペア:

[(1, 221216520), (2, 110608260), (3, 73738840), (4, 55304130), (5, 44243304), (6, 36869420), (7, 31602360), (8, 27652065), (10, 22121652), (12, 18434710), (14, 15801180), (15, 14747768), (20, 11060826), (21, 10534120), (24, 9217355), (28, 7900590), (30, 7373884), (35, 6320472), (40, 5530413), (42, 5267060), (56, 3950295), (60, 3686942), (70, 3160236), (84, 2633530), (105, 2106824), (120, 1843471), (140, 1580118), (168, 1316765), (210, 1053412), (280, 790059), (389, 568680), (420, 526706), (677, 326760), (778, 284340), (840, 263353), (1167, 189560), (1354, 163380), (1556, 142170), (1945, 113736), (2031, 108920), (2334, 94780), (2708, 81690), (2723, 81240), (3112, 71085), (3385, 65352), (3890, 56868), (4062, 54460), (4668, 47390), (4739, 46680), (5416, 40845), (5446, 40620), (5835, 37912), (6770, 32676), (7780, 28434), (8124, 27230), (8169, 27080), (9336, 23695), (9478, 23340), (10155, 21784), (10892, 20310), (11670, 18956), (13540, 16338), (13615, 16248), (14217, 15560)]