20356140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2851}}^1$

素因数の和:2887

約数の個数: 96

約数和(自身を含む): 68995584

約数和(自身を除く): 48639444

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 51, 60, 68, 70, 84, 85, 102, 105, 119, 140, 170, 204, 210, 238, 255, 340, 357, 420, 476, 510, 595, 714, 1020, 1190, 1428, 1785, 2380, 2851, 3570, 5702, 7140, 8553, 11404, 14255, 17106, 19957, 28510, 34212, 39914, 42765, 48467, 57020, 59871, 79828, 85530, 96934, 99785, 119742, 145401, 171060, 193868, 199570, 239484, 242335, 290802, 299355, 339269, 399140, 484670, 581604, 598710, 678538, 727005, 969340, 1017807, 1197420, 1357076, 1454010, 1696345, 2035614, 2908020, 3392690, 4071228, 5089035, 6785380, 10178070, 20356140]

約数ペア:

[(1, 20356140), (2, 10178070), (3, 6785380), (4, 5089035), (5, 4071228), (6, 3392690), (7, 2908020), (10, 2035614), (12, 1696345), (14, 1454010), (15, 1357076), (17, 1197420), (20, 1017807), (21, 969340), (28, 727005), (30, 678538), (34, 598710), (35, 581604), (42, 484670), (51, 399140), (60, 339269), (68, 299355), (70, 290802), (84, 242335), (85, 239484), (102, 199570), (105, 193868), (119, 171060), (140, 145401), (170, 119742), (204, 99785), (210, 96934), (238, 85530), (255, 79828), (340, 59871), (357, 57020), (420, 48467), (476, 42765), (510, 39914), (595, 34212), (714, 28510), (1020, 19957), (1190, 17106), (1428, 14255), (1785, 11404), (2380, 8553), (2851, 7140), (3570, 5702)]