21206484

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{401}}^1$

素因数の和:537

約数の個数: 72

約数和(自身を含む): 58384872

約数和(自身を除く): 37178388

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 113, 117, 156, 226, 234, 339, 401, 452, 468, 678, 802, 1017, 1203, 1356, 1469, 1604, 2034, 2406, 2938, 3609, 4068, 4407, 4812, 5213, 5876, 7218, 8814, 10426, 13221, 14436, 15639, 17628, 20852, 26442, 31278, 45313, 46917, 52884, 62556, 90626, 93834, 135939, 181252, 187668, 271878, 407817, 543756, 589069, 815634, 1178138, 1631268, 1767207, 2356276, 3534414, 5301621, 7068828, 10603242, 21206484]

約数ペア:

[(1, 21206484), (2, 10603242), (3, 7068828), (4, 5301621), (6, 3534414), (9, 2356276), (12, 1767207), (13, 1631268), (18, 1178138), (26, 815634), (36, 589069), (39, 543756), (52, 407817), (78, 271878), (113, 187668), (117, 181252), (156, 135939), (226, 93834), (234, 90626), (339, 62556), (401, 52884), (452, 46917), (468, 45313), (678, 31278), (802, 26442), (1017, 20852), (1203, 17628), (1356, 15639), (1469, 14436), (1604, 13221), (2034, 10426), (2406, 8814), (2938, 7218), (3609, 5876), (4068, 5213), (4407, 4812)]