20295450

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{379}}^1$

素因数の和:421

約数の個数: 144

約数和(自身を含む): 66156480

約数和(自身を除く): 45861030

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 17, 18, 21, 25, 30, 34, 35, 42, 45, 50, 51, 63, 70, 75, 85, 90, 102, 105, 119, 126, 150, 153, 170, 175, 210, 225, 238, 255, 306, 315, 350, 357, 379, 425, 450, 510, 525, 595, 630, 714, 758, 765, 850, 1050, 1071, 1137, 1190, 1275, 1530, 1575, 1785, 1895, 2142, 2274, 2550, 2653, 2975, 3150, 3411, 3570, 3790, 3825, 5306, 5355, 5685, 5950, 6443, 6822, 7650, 7959, 8925, 9475, 10710, 11370, 12886, 13265, 15918, 17055, 17850, 18950, 19329, 23877, 26530, 26775, 28425, 32215, 34110, 38658, 39795, 45101, 47754, 53550, 56850, 57987, 64430, 66325, 79590, 85275, 90202, 96645, 115974, 119385, 132650, 135303, 161075, 170550, 193290, 198975, 225505, 238770, 270606, 289935, 322150, 397950, 405909, 451010, 483225, 579870, 596925, 676515, 811818, 966450, 1127525, 1193850, 1353030, 1449675, 2029545, 2255050, 2899350, 3382575, 4059090, 6765150, 10147725, 20295450]

約数ペア:

[(1, 20295450), (2, 10147725), (3, 6765150), (5, 4059090), (6, 3382575), (7, 2899350), (9, 2255050), (10, 2029545), (14, 1449675), (15, 1353030), (17, 1193850), (18, 1127525), (21, 966450), (25, 811818), (30, 676515), (34, 596925), (35, 579870), (42, 483225), (45, 451010), (50, 405909), (51, 397950), (63, 322150), (70, 289935), (75, 270606), (85, 238770), (90, 225505), (102, 198975), (105, 193290), (119, 170550), (126, 161075), (150, 135303), (153, 132650), (170, 119385), (175, 115974), (210, 96645), (225, 90202), (238, 85275), (255, 79590), (306, 66325), (315, 64430), (350, 57987), (357, 56850), (379, 53550), (425, 47754), (450, 45101), (510, 39795), (525, 38658), (595, 34110), (630, 32215), (714, 28425), (758, 26775), (765, 26530), (850, 23877), (1050, 19329), (1071, 18950), (1137, 17850), (1190, 17055), (1275, 15918), (1530, 13265), (1575, 12886), (1785, 11370), (1895, 10710), (2142, 9475), (2274, 8925), (2550, 7959), (2653, 7650), (2975, 6822), (3150, 6443), (3411, 5950), (3570, 5685), (3790, 5355), (3825, 5306)]