19516140

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{1721}}^1$

素因数の和:1749

約数の個数: 120

約数和(自身を含む): 70009632

約数和(自身を除く): 50493492

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, 1721, 1890, 2268, 2835, 3442, 3780, 5163, 5670, 6884, 8605, 10326, 11340, 12047, 15489, 17210, 20652, 24094, 25815, 30978, 34420, 36141, 46467, 48188, 51630, 60235, 61956, 72282, 77445, 92934, 103260, 108423, 120470, 139401, 144564, 154890, 180705, 185868, 216846, 232335, 240940, 278802, 309780, 325269, 361410, 433692, 464670, 542115, 557604, 650538, 697005, 722820, 929340, 975807, 1084230, 1301076, 1394010, 1626345, 1951614, 2168460, 2788020, 3252690, 3903228, 4879035, 6505380, 9758070, 19516140]

約数ペア:

[(1, 19516140), (2, 9758070), (3, 6505380), (4, 4879035), (5, 3903228), (6, 3252690), (7, 2788020), (9, 2168460), (10, 1951614), (12, 1626345), (14, 1394010), (15, 1301076), (18, 1084230), (20, 975807), (21, 929340), (27, 722820), (28, 697005), (30, 650538), (35, 557604), (36, 542115), (42, 464670), (45, 433692), (54, 361410), (60, 325269), (63, 309780), (70, 278802), (81, 240940), (84, 232335), (90, 216846), (105, 185868), (108, 180705), (126, 154890), (135, 144564), (140, 139401), (162, 120470), (180, 108423), (189, 103260), (210, 92934), (252, 77445), (270, 72282), (315, 61956), (324, 60235), (378, 51630), (405, 48188), (420, 46467), (540, 36141), (567, 34420), (630, 30978), (756, 25815), (810, 24094), (945, 20652), (1134, 17210), (1260, 15489), (1620, 12047), (1721, 11340), (1890, 10326), (2268, 8605), (2835, 6884), (3442, 5670), (3780, 5163)]