15978760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{383}}^1$

素因数の和:550

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 25493240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 149, 280, 298, 383, 596, 745, 766, 1043, 1192, 1490, 1532, 1915, 2086, 2681, 2980, 3064, 3830, 4172, 5215, 5362, 5960, 7660, 8344, 10430, 10724, 13405, 15320, 20860, 21448, 26810, 41720, 53620, 57067, 107240, 114134, 228268, 285335, 399469, 456536, 570670, 798938, 1141340, 1597876, 1997345, 2282680, 3195752, 3994690, 7989380, 15978760]

約数ペア:

[(1, 15978760), (2, 7989380), (4, 3994690), (5, 3195752), (7, 2282680), (8, 1997345), (10, 1597876), (14, 1141340), (20, 798938), (28, 570670), (35, 456536), (40, 399469), (56, 285335), (70, 228268), (140, 114134), (149, 107240), (280, 57067), (298, 53620), (383, 41720), (596, 26810), (745, 21448), (766, 20860), (1043, 15320), (1192, 13405), (1490, 10724), (1532, 10430), (1915, 8344), (2086, 7660), (2681, 5960), (2980, 5362), (3064, 5215), (3830, 4172)]