21177780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1429}}^1$

素因数の和:1473

約数の個数: 96

約数和(自身を含む): 67267200

約数和(自身を除く): 46089420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 76, 78, 95, 114, 130, 156, 190, 195, 228, 247, 260, 285, 380, 390, 494, 570, 741, 780, 988, 1140, 1235, 1429, 1482, 2470, 2858, 2964, 3705, 4287, 4940, 5716, 7145, 7410, 8574, 14290, 14820, 17148, 18577, 21435, 27151, 28580, 37154, 42870, 54302, 55731, 74308, 81453, 85740, 92885, 108604, 111462, 135755, 162906, 185770, 222924, 271510, 278655, 325812, 352963, 371540, 407265, 543020, 557310, 705926, 814530, 1058889, 1114620, 1411852, 1629060, 1764815, 2117778, 3529630, 4235556, 5294445, 7059260, 10588890, 21177780]

約数ペア:

[(1, 21177780), (2, 10588890), (3, 7059260), (4, 5294445), (5, 4235556), (6, 3529630), (10, 2117778), (12, 1764815), (13, 1629060), (15, 1411852), (19, 1114620), (20, 1058889), (26, 814530), (30, 705926), (38, 557310), (39, 543020), (52, 407265), (57, 371540), (60, 352963), (65, 325812), (76, 278655), (78, 271510), (95, 222924), (114, 185770), (130, 162906), (156, 135755), (190, 111462), (195, 108604), (228, 92885), (247, 85740), (260, 81453), (285, 74308), (380, 55731), (390, 54302), (494, 42870), (570, 37154), (741, 28580), (780, 27151), (988, 21435), (1140, 18577), (1235, 17148), (1429, 14820), (1482, 14290), (2470, 8574), (2858, 7410), (2964, 7145), (3705, 5716), (4287, 4940)]