19538820

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{1723}}^1$

素因数の和:1751

約数の個数: 120

約数和(自身を含む): 70090944

約数和(自身を除く): 50552124

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1723, 1890, 2268, 2835, 3446, 3780, 5169, 5670, 6892, 8615, 10338, 11340, 12061, 15507, 17230, 20676, 24122, 25845, 31014, 34460, 36183, 46521, 48244, 51690, 60305, 62028, 72366, 77535, 93042, 103380, 108549, 120610, 139563, 144732, 155070, 180915, 186084, 217098, 232605, 241220, 279126, 310140, 325647, 361830, 434196, 465210, 542745, 558252, 651294, 697815, 723660, 930420, 976941, 1085490, 1302588, 1395630, 1628235, 1953882, 2170980, 2791260, 3256470, 3907764, 4884705, 6512940, 9769410, 19538820]

約数ペア:

[(1, 19538820), (2, 9769410), (3, 6512940), (4, 4884705), (5, 3907764), (6, 3256470), (7, 2791260), (9, 2170980), (10, 1953882), (12, 1628235), (14, 1395630), (15, 1302588), (18, 1085490), (20, 976941), (21, 930420), (27, 723660), (28, 697815), (30, 651294), (35, 558252), (36, 542745), (42, 465210), (45, 434196), (54, 361830), (60, 325647), (63, 310140), (70, 279126), (81, 241220), (84, 232605), (90, 217098), (105, 186084), (108, 180915), (126, 155070), (135, 144732), (140, 139563), (162, 120610), (180, 108549), (189, 103380), (210, 93042), (252, 77535), (270, 72366), (315, 62028), (324, 60305), (378, 51690), (405, 48244), (420, 46521), (540, 36183), (567, 34460), (630, 31014), (756, 25845), (810, 24122), (945, 20676), (1134, 17230), (1260, 15507), (1620, 12061), (1723, 11340), (1890, 10338), (2268, 8615), (2835, 6892), (3446, 5670), (3780, 5169)]