1618306580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{82651}}^1$

素因数の和:82760

約数の個数: 48

約数和(自身を含む): 3749094720

約数和(自身を除く): 2130788140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3916, 4895, 9790, 19580, 82651, 165302, 330604, 413255, 826510, 909161, 1653020, 1818322, 3636644, 4545805, 7355939, 9091610, 14711878, 18183220, 29423756, 36779695, 73559390, 80915329, 147118780, 161830658, 323661316, 404576645, 809153290, 1618306580]

約数ペア:

[(1, 1618306580), (2, 809153290), (4, 404576645), (5, 323661316), (10, 161830658), (11, 147118780), (20, 80915329), (22, 73559390), (44, 36779695), (55, 29423756), (89, 18183220), (110, 14711878), (178, 9091610), (220, 7355939), (356, 4545805), (445, 3636644), (890, 1818322), (979, 1653020), (1780, 909161), (1958, 826510), (3916, 413255), (4895, 330604), (9790, 165302), (19580, 82651)]