20125980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15973}}^1$

素因数の和:15995

約数の個数: 72

約数和(自身を含む): 69774432

約数和(自身を除く): 49648452

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, 15973, 31946, 47919, 63892, 79865, 95838, 111811, 143757, 159730, 191676, 223622, 239595, 287514, 319460, 335433, 447244, 479190, 559055, 575028, 670866, 718785, 958380, 1006299, 1118110, 1341732, 1437570, 1677165, 2012598, 2236220, 2875140, 3354330, 4025196, 5031495, 6708660, 10062990, 20125980]

約数ペア:

[(1, 20125980), (2, 10062990), (3, 6708660), (4, 5031495), (5, 4025196), (6, 3354330), (7, 2875140), (9, 2236220), (10, 2012598), (12, 1677165), (14, 1437570), (15, 1341732), (18, 1118110), (20, 1006299), (21, 958380), (28, 718785), (30, 670866), (35, 575028), (36, 559055), (42, 479190), (45, 447244), (60, 335433), (63, 319460), (70, 287514), (84, 239595), (90, 223622), (105, 191676), (126, 159730), (140, 143757), (180, 111811), (210, 95838), (252, 79865), (315, 63892), (420, 47919), (630, 31946), (1260, 15973)]