21385476

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{751}}^1$

素因数の和:881

約数の個数: 72

約数和(自身を含む): 62409984

約数和(自身を除く): 41024508

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 113, 126, 226, 252, 339, 452, 678, 751, 791, 1017, 1356, 1502, 1582, 2034, 2253, 2373, 3004, 3164, 4068, 4506, 4746, 5257, 6759, 7119, 9012, 9492, 10514, 13518, 14238, 15771, 21028, 27036, 28476, 31542, 47313, 63084, 84863, 94626, 169726, 189252, 254589, 339452, 509178, 594041, 763767, 1018356, 1188082, 1527534, 1782123, 2376164, 3055068, 3564246, 5346369, 7128492, 10692738, 21385476]

約数ペア:

[(1, 21385476), (2, 10692738), (3, 7128492), (4, 5346369), (6, 3564246), (7, 3055068), (9, 2376164), (12, 1782123), (14, 1527534), (18, 1188082), (21, 1018356), (28, 763767), (36, 594041), (42, 509178), (63, 339452), (84, 254589), (113, 189252), (126, 169726), (226, 94626), (252, 84863), (339, 63084), (452, 47313), (678, 31542), (751, 28476), (791, 27036), (1017, 21028), (1356, 15771), (1502, 14238), (1582, 13518), (2034, 10514), (2253, 9492), (2373, 9012), (3004, 7119), (3164, 6759), (4068, 5257), (4506, 4746)]