18892120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{773}}^1$

素因数の和:844

約数の個数: 64

約数和(自身を含む): 46811520

約数和(自身を除く): 27919400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 47, 52, 65, 94, 104, 130, 188, 235, 260, 376, 470, 520, 611, 773, 940, 1222, 1546, 1880, 2444, 3055, 3092, 3865, 4888, 6110, 6184, 7730, 10049, 12220, 15460, 20098, 24440, 30920, 36331, 40196, 50245, 72662, 80392, 100490, 145324, 181655, 200980, 290648, 363310, 401960, 472303, 726620, 944606, 1453240, 1889212, 2361515, 3778424, 4723030, 9446060, 18892120]

約数ペア:

[(1, 18892120), (2, 9446060), (4, 4723030), (5, 3778424), (8, 2361515), (10, 1889212), (13, 1453240), (20, 944606), (26, 726620), (40, 472303), (47, 401960), (52, 363310), (65, 290648), (94, 200980), (104, 181655), (130, 145324), (188, 100490), (235, 80392), (260, 72662), (376, 50245), (470, 40196), (520, 36331), (611, 30920), (773, 24440), (940, 20098), (1222, 15460), (1546, 12220), (1880, 10049), (2444, 7730), (3055, 6184), (3092, 6110), (3865, 4888)]