21189560

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{569}}^1$

素因数の和:613

約数の個数: 96

約数和(自身を含む): 58482000

約数和(自身を除く): 37292440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 95, 98, 133, 140, 152, 190, 196, 245, 266, 280, 380, 392, 490, 532, 569, 665, 760, 931, 980, 1064, 1138, 1330, 1862, 1960, 2276, 2660, 2845, 3724, 3983, 4552, 4655, 5320, 5690, 7448, 7966, 9310, 10811, 11380, 15932, 18620, 19915, 21622, 22760, 27881, 31864, 37240, 39830, 43244, 54055, 55762, 75677, 79660, 86488, 108110, 111524, 139405, 151354, 159320, 216220, 223048, 278810, 302708, 378385, 432440, 529739, 557620, 605416, 756770, 1059478, 1115240, 1513540, 2118956, 2648695, 3027080, 4237912, 5297390, 10594780, 21189560]

約数ペア:

[(1, 21189560), (2, 10594780), (4, 5297390), (5, 4237912), (7, 3027080), (8, 2648695), (10, 2118956), (14, 1513540), (19, 1115240), (20, 1059478), (28, 756770), (35, 605416), (38, 557620), (40, 529739), (49, 432440), (56, 378385), (70, 302708), (76, 278810), (95, 223048), (98, 216220), (133, 159320), (140, 151354), (152, 139405), (190, 111524), (196, 108110), (245, 86488), (266, 79660), (280, 75677), (380, 55762), (392, 54055), (490, 43244), (532, 39830), (569, 37240), (665, 31864), (760, 27881), (931, 22760), (980, 21622), (1064, 19915), (1138, 18620), (1330, 15932), (1862, 11380), (1960, 10811), (2276, 9310), (2660, 7966), (2845, 7448), (3724, 5690), (3983, 5320), (4552, 4655)]