21675420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:244

約数の個数: 144

約数和(自身を含む): 72465120

約数和(自身を除く): 50789700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 59, 60, 65, 78, 90, 117, 118, 130, 156, 157, 177, 180, 195, 234, 236, 260, 295, 314, 354, 390, 468, 471, 531, 585, 590, 628, 708, 767, 780, 785, 885, 942, 1062, 1170, 1180, 1413, 1534, 1570, 1770, 1884, 2041, 2124, 2301, 2340, 2355, 2655, 2826, 3068, 3140, 3540, 3835, 4082, 4602, 4710, 5310, 5652, 6123, 6903, 7065, 7670, 8164, 9204, 9263, 9420, 10205, 10620, 11505, 12246, 13806, 14130, 15340, 18369, 18526, 20410, 23010, 24492, 27612, 27789, 28260, 30615, 34515, 36738, 37052, 40820, 46020, 46315, 55578, 61230, 69030, 73476, 83367, 91845, 92630, 111156, 120419, 122460, 138060, 138945, 166734, 183690, 185260, 240838, 277890, 333468, 361257, 367380, 416835, 481676, 555780, 602095, 722514, 833670, 1083771, 1204190, 1445028, 1667340, 1806285, 2167542, 2408380, 3612570, 4335084, 5418855, 7225140, 10837710, 21675420]

約数ペア:

[(1, 21675420), (2, 10837710), (3, 7225140), (4, 5418855), (5, 4335084), (6, 3612570), (9, 2408380), (10, 2167542), (12, 1806285), (13, 1667340), (15, 1445028), (18, 1204190), (20, 1083771), (26, 833670), (30, 722514), (36, 602095), (39, 555780), (45, 481676), (52, 416835), (59, 367380), (60, 361257), (65, 333468), (78, 277890), (90, 240838), (117, 185260), (118, 183690), (130, 166734), (156, 138945), (157, 138060), (177, 122460), (180, 120419), (195, 111156), (234, 92630), (236, 91845), (260, 83367), (295, 73476), (314, 69030), (354, 61230), (390, 55578), (468, 46315), (471, 46020), (531, 40820), (585, 37052), (590, 36738), (628, 34515), (708, 30615), (767, 28260), (780, 27789), (785, 27612), (885, 24492), (942, 23010), (1062, 20410), (1170, 18526), (1180, 18369), (1413, 15340), (1534, 14130), (1570, 13806), (1770, 12246), (1884, 11505), (2041, 10620), (2124, 10205), (2301, 9420), (2340, 9263), (2355, 9204), (2655, 8164), (2826, 7670), (3068, 7065), (3140, 6903), (3540, 6123), (3835, 5652), (4082, 5310), (4602, 4710)]