21287160

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2039}}^1$

素因数の和:2085

約数の個数: 96

約数和(自身を含む): 71604000

約数和(自身を除く): 50316840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 29, 30, 36, 40, 45, 58, 60, 72, 87, 90, 116, 120, 145, 174, 180, 232, 261, 290, 348, 360, 435, 522, 580, 696, 870, 1044, 1160, 1305, 1740, 2039, 2088, 2610, 3480, 4078, 5220, 6117, 8156, 10195, 10440, 12234, 16312, 18351, 20390, 24468, 30585, 36702, 40780, 48936, 59131, 61170, 73404, 81560, 91755, 118262, 122340, 146808, 177393, 183510, 236524, 244680, 295655, 354786, 367020, 473048, 532179, 591310, 709572, 734040, 886965, 1064358, 1182620, 1419144, 1773930, 2128716, 2365240, 2660895, 3547860, 4257432, 5321790, 7095720, 10643580, 21287160]

約数ペア:

[(1, 21287160), (2, 10643580), (3, 7095720), (4, 5321790), (5, 4257432), (6, 3547860), (8, 2660895), (9, 2365240), (10, 2128716), (12, 1773930), (15, 1419144), (18, 1182620), (20, 1064358), (24, 886965), (29, 734040), (30, 709572), (36, 591310), (40, 532179), (45, 473048), (58, 367020), (60, 354786), (72, 295655), (87, 244680), (90, 236524), (116, 183510), (120, 177393), (145, 146808), (174, 122340), (180, 118262), (232, 91755), (261, 81560), (290, 73404), (348, 61170), (360, 59131), (435, 48936), (522, 40780), (580, 36702), (696, 30585), (870, 24468), (1044, 20390), (1160, 18351), (1305, 16312), (1740, 12234), (2039, 10440), (2088, 10195), (2610, 8156), (3480, 6117), (4078, 5220)]