1242156980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{22511}}^1$

素因数の和:22640

約数の個数: 48

約数和(自身を含む): 2723051520

約数和(自身を除く): 1480894540

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1780, 2759, 5518, 11036, 13795, 22511, 27590, 45022, 55180, 90044, 112555, 225110, 450220, 697841, 1395682, 2003479, 2791364, 3489205, 4006958, 6978410, 8013916, 10017395, 13956820, 20034790, 40069580, 62107849, 124215698, 248431396, 310539245, 621078490, 1242156980]

約数ペア:

[(1, 1242156980), (2, 621078490), (4, 310539245), (5, 248431396), (10, 124215698), (20, 62107849), (31, 40069580), (62, 20034790), (89, 13956820), (124, 10017395), (155, 8013916), (178, 6978410), (310, 4006958), (356, 3489205), (445, 2791364), (620, 2003479), (890, 1395682), (1780, 697841), (2759, 450220), (5518, 225110), (11036, 112555), (13795, 90044), (22511, 55180), (27590, 45022)]