397921860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{315811}}^1$

素因数の和:315833

約数の個数: 72

約数和(自身を含む): 1379466816

約数和(自身を除く): 981544956

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 315811, 631622, 947433, 1263244, 1579055, 1894866, 2210677, 2842299, 3158110, 3789732, 4421354, 4737165, 5684598, 6316220, 6632031, 8842708, 9474330, 11053385, 11369196, 13264062, 14211495, 18948660, 19896093, 22106770, 26528124, 28422990, 33160155, 39792186, 44213540, 56845980, 66320310, 79584372, 99480465, 132640620, 198960930, 397921860]

約数ペア:

[(1, 397921860), (2, 198960930), (3, 132640620), (4, 99480465), (5, 79584372), (6, 66320310), (7, 56845980), (9, 44213540), (10, 39792186), (12, 33160155), (14, 28422990), (15, 26528124), (18, 22106770), (20, 19896093), (21, 18948660), (28, 14211495), (30, 13264062), (35, 11369196), (36, 11053385), (42, 9474330), (45, 8842708), (60, 6632031), (63, 6316220), (70, 5684598), (84, 4737165), (90, 4421354), (105, 3789732), (126, 3158110), (140, 2842299), (180, 2210677), (210, 1894866), (252, 1579055), (315, 1263244), (420, 947433), (630, 631622), (1260, 315811)]