20863080

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{487}}^1$

素因数の和:528

約数の個数: 192

約数和(自身を含む): 82218240

約数和(自身を除く): 61355160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 24, 28, 30, 34, 35, 36, 40, 42, 45, 51, 56, 60, 63, 68, 70, 72, 84, 85, 90, 102, 105, 119, 120, 126, 136, 140, 153, 168, 170, 180, 204, 210, 238, 252, 255, 280, 306, 315, 340, 357, 360, 408, 420, 476, 487, 504, 510, 595, 612, 630, 680, 714, 765, 840, 952, 974, 1020, 1071, 1190, 1224, 1260, 1428, 1461, 1530, 1785, 1948, 2040, 2142, 2380, 2435, 2520, 2856, 2922, 3060, 3409, 3570, 3896, 4284, 4383, 4760, 4870, 5355, 5844, 6120, 6818, 7140, 7305, 8279, 8568, 8766, 9740, 10227, 10710, 11688, 13636, 14280, 14610, 16558, 17045, 17532, 19480, 20454, 21420, 21915, 24837, 27272, 29220, 30681, 33116, 34090, 35064, 40908, 41395, 42840, 43830, 49674, 51135, 57953, 58440, 61362, 66232, 68180, 74511, 81816, 82790, 87660, 99348, 102270, 115906, 122724, 124185, 136360, 149022, 153405, 165580, 173859, 175320, 198696, 204540, 231812, 245448, 248370, 289765, 298044, 306810, 331160, 347718, 372555, 409080, 463624, 496740, 521577, 579530, 596088, 613620, 695436, 745110, 869295, 993480, 1043154, 1159060, 1227240, 1390872, 1490220, 1738590, 2086308, 2318120, 2607885, 2980440, 3477180, 4172616, 5215770, 6954360, 10431540, 20863080]

約数ペア:

[(1, 20863080), (2, 10431540), (3, 6954360), (4, 5215770), (5, 4172616), (6, 3477180), (7, 2980440), (8, 2607885), (9, 2318120), (10, 2086308), (12, 1738590), (14, 1490220), (15, 1390872), (17, 1227240), (18, 1159060), (20, 1043154), (21, 993480), (24, 869295), (28, 745110), (30, 695436), (34, 613620), (35, 596088), (36, 579530), (40, 521577), (42, 496740), (45, 463624), (51, 409080), (56, 372555), (60, 347718), (63, 331160), (68, 306810), (70, 298044), (72, 289765), (84, 248370), (85, 245448), (90, 231812), (102, 204540), (105, 198696), (119, 175320), (120, 173859), (126, 165580), (136, 153405), (140, 149022), (153, 136360), (168, 124185), (170, 122724), (180, 115906), (204, 102270), (210, 99348), (238, 87660), (252, 82790), (255, 81816), (280, 74511), (306, 68180), (315, 66232), (340, 61362), (357, 58440), (360, 57953), (408, 51135), (420, 49674), (476, 43830), (487, 42840), (504, 41395), (510, 40908), (595, 35064), (612, 34090), (630, 33116), (680, 30681), (714, 29220), (765, 27272), (840, 24837), (952, 21915), (974, 21420), (1020, 20454), (1071, 19480), (1190, 17532), (1224, 17045), (1260, 16558), (1428, 14610), (1461, 14280), (1530, 13636), (1785, 11688), (1948, 10710), (2040, 10227), (2142, 9740), (2380, 8766), (2435, 8568), (2520, 8279), (2856, 7305), (2922, 7140), (3060, 6818), (3409, 6120), (3570, 5844), (3896, 5355), (4284, 4870), (4383, 4760)]