25488820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{839}}^1$

素因数の和:893

約数の個数: 72

約数和(自身を含む): 64350720

約数和(自身を除く): 38861900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 839, 868, 980, 1085, 1519, 1678, 2170, 3038, 3356, 4195, 4340, 5873, 6076, 7595, 8390, 11746, 15190, 16780, 23492, 26009, 29365, 30380, 41111, 52018, 58730, 82222, 104036, 117460, 130045, 164444, 182063, 205555, 260090, 364126, 411110, 520180, 728252, 822220, 910315, 1274441, 1820630, 2548882, 3641260, 5097764, 6372205, 12744410, 25488820]

約数ペア:

[(1, 25488820), (2, 12744410), (4, 6372205), (5, 5097764), (7, 3641260), (10, 2548882), (14, 1820630), (20, 1274441), (28, 910315), (31, 822220), (35, 728252), (49, 520180), (62, 411110), (70, 364126), (98, 260090), (124, 205555), (140, 182063), (155, 164444), (196, 130045), (217, 117460), (245, 104036), (310, 82222), (434, 58730), (490, 52018), (620, 41111), (839, 30380), (868, 29365), (980, 26009), (1085, 23492), (1519, 16780), (1678, 15190), (2170, 11746), (3038, 8390), (3356, 7595), (4195, 6076), (4340, 5873)]