21250680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{947}}^1$

素因数の和:989

約数の個数: 128

約数和(自身を含む): 73716480

約数和(自身を除く): 52465800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 17, 20, 22, 24, 30, 33, 34, 40, 44, 51, 55, 60, 66, 68, 85, 88, 102, 110, 120, 132, 136, 165, 170, 187, 204, 220, 255, 264, 330, 340, 374, 408, 440, 510, 561, 660, 680, 748, 935, 947, 1020, 1122, 1320, 1496, 1870, 1894, 2040, 2244, 2805, 2841, 3740, 3788, 4488, 4735, 5610, 5682, 7480, 7576, 9470, 10417, 11220, 11364, 14205, 16099, 18940, 20834, 22440, 22728, 28410, 31251, 32198, 37880, 41668, 48297, 52085, 56820, 62502, 64396, 80495, 83336, 96594, 104170, 113640, 125004, 128792, 156255, 160990, 177089, 193188, 208340, 241485, 250008, 312510, 321980, 354178, 386376, 416680, 482970, 531267, 625020, 643960, 708356, 885445, 965940, 1062534, 1250040, 1416712, 1770890, 1931880, 2125068, 2656335, 3541780, 4250136, 5312670, 7083560, 10625340, 21250680]

約数ペア:

[(1, 21250680), (2, 10625340), (3, 7083560), (4, 5312670), (5, 4250136), (6, 3541780), (8, 2656335), (10, 2125068), (11, 1931880), (12, 1770890), (15, 1416712), (17, 1250040), (20, 1062534), (22, 965940), (24, 885445), (30, 708356), (33, 643960), (34, 625020), (40, 531267), (44, 482970), (51, 416680), (55, 386376), (60, 354178), (66, 321980), (68, 312510), (85, 250008), (88, 241485), (102, 208340), (110, 193188), (120, 177089), (132, 160990), (136, 156255), (165, 128792), (170, 125004), (187, 113640), (204, 104170), (220, 96594), (255, 83336), (264, 80495), (330, 64396), (340, 62502), (374, 56820), (408, 52085), (440, 48297), (510, 41668), (561, 37880), (660, 32198), (680, 31251), (748, 28410), (935, 22728), (947, 22440), (1020, 20834), (1122, 18940), (1320, 16099), (1496, 14205), (1870, 11364), (1894, 11220), (2040, 10417), (2244, 9470), (2805, 7576), (2841, 7480), (3740, 5682), (3788, 5610), (4488, 4735)]