21040470

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{401}}^1$

素因数の和:478

約数の個数: 96

約数和(自身を含む): 60956064

約数和(自身を除く): 39915594

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 53, 55, 66, 90, 99, 106, 110, 159, 165, 198, 265, 318, 330, 401, 477, 495, 530, 583, 795, 802, 954, 990, 1166, 1203, 1590, 1749, 2005, 2385, 2406, 2915, 3498, 3609, 4010, 4411, 4770, 5247, 5830, 6015, 7218, 8745, 8822, 10494, 12030, 13233, 17490, 18045, 21253, 22055, 26235, 26466, 36090, 39699, 42506, 44110, 52470, 63759, 66165, 79398, 106265, 127518, 132330, 191277, 198495, 212530, 233783, 318795, 382554, 396990, 467566, 637590, 701349, 956385, 1168915, 1402698, 1912770, 2104047, 2337830, 3506745, 4208094, 7013490, 10520235, 21040470]

約数ペア:

[(1, 21040470), (2, 10520235), (3, 7013490), (5, 4208094), (6, 3506745), (9, 2337830), (10, 2104047), (11, 1912770), (15, 1402698), (18, 1168915), (22, 956385), (30, 701349), (33, 637590), (45, 467566), (53, 396990), (55, 382554), (66, 318795), (90, 233783), (99, 212530), (106, 198495), (110, 191277), (159, 132330), (165, 127518), (198, 106265), (265, 79398), (318, 66165), (330, 63759), (401, 52470), (477, 44110), (495, 42506), (530, 39699), (583, 36090), (795, 26466), (802, 26235), (954, 22055), (990, 21253), (1166, 18045), (1203, 17490), (1590, 13233), (1749, 12030), (2005, 10494), (2385, 8822), (2406, 8745), (2915, 7218), (3498, 6015), (3609, 5830), (4010, 5247), (4411, 4770)]