18802120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 44582400

約数和(自身を除く): 25780280

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 59, 62, 118, 124, 155, 236, 248, 257, 295, 310, 472, 514, 590, 620, 1028, 1180, 1240, 1285, 1829, 2056, 2360, 2570, 3658, 5140, 7316, 7967, 9145, 10280, 14632, 15163, 15934, 18290, 30326, 31868, 36580, 39835, 60652, 63736, 73160, 75815, 79670, 121304, 151630, 159340, 303260, 318680, 470053, 606520, 940106, 1880212, 2350265, 3760424, 4700530, 9401060, 18802120]

約数ペア:

[(1, 18802120), (2, 9401060), (4, 4700530), (5, 3760424), (8, 2350265), (10, 1880212), (20, 940106), (31, 606520), (40, 470053), (59, 318680), (62, 303260), (118, 159340), (124, 151630), (155, 121304), (236, 79670), (248, 75815), (257, 73160), (295, 63736), (310, 60652), (472, 39835), (514, 36580), (590, 31868), (620, 30326), (1028, 18290), (1180, 15934), (1240, 15163), (1285, 14632), (1829, 10280), (2056, 9145), (2360, 7967), (2570, 7316), (3658, 5140)]