9877220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 21772800

約数和(自身を除く): 11895580

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 179, 310, 356, 358, 445, 620, 716, 890, 895, 1780, 1790, 2759, 3580, 5518, 5549, 11036, 11098, 13795, 15931, 22196, 27590, 27745, 31862, 55180, 55490, 63724, 79655, 110980, 159310, 318620, 493861, 987722, 1975444, 2469305, 4938610, 9877220]

約数ペア:

[(1, 9877220), (2, 4938610), (4, 2469305), (5, 1975444), (10, 987722), (20, 493861), (31, 318620), (62, 159310), (89, 110980), (124, 79655), (155, 63724), (178, 55490), (179, 55180), (310, 31862), (356, 27745), (358, 27590), (445, 22196), (620, 15931), (716, 13795), (890, 11098), (895, 11036), (1780, 5549), (1790, 5518), (2759, 3580)]