218968680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{260677}}^1$

素因数の和:260698

約数の個数: 64

約数和(自身を含む): 750752640

約数和(自身を除く): 531783960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 260677, 521354, 782031, 1042708, 1303385, 1564062, 1824739, 2085416, 2606770, 3128124, 3649478, 3910155, 5213540, 5474217, 6256248, 7298956, 7820310, 9123695, 10427080, 10948434, 14597912, 15640620, 18247390, 21896868, 27371085, 31281240, 36494780, 43793736, 54742170, 72989560, 109484340, 218968680]

約数ペア:

[(1, 218968680), (2, 109484340), (3, 72989560), (4, 54742170), (5, 43793736), (6, 36494780), (7, 31281240), (8, 27371085), (10, 21896868), (12, 18247390), (14, 15640620), (15, 14597912), (20, 10948434), (21, 10427080), (24, 9123695), (28, 7820310), (30, 7298956), (35, 6256248), (40, 5474217), (42, 5213540), (56, 3910155), (60, 3649478), (70, 3128124), (84, 2606770), (105, 2085416), (120, 1824739), (140, 1564062), (168, 1303385), (210, 1042708), (280, 782031), (420, 521354), (840, 260677)]