68816580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{263}}^1$

素因数の和:378

約数の個数: 144

約数和(自身を含む): 227525760

約数和(自身を除く): 158709180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 89, 98, 105, 140, 147, 178, 196, 210, 245, 263, 267, 294, 356, 420, 445, 490, 526, 534, 588, 623, 735, 789, 890, 980, 1052, 1068, 1246, 1315, 1335, 1470, 1578, 1780, 1841, 1869, 2492, 2630, 2670, 2940, 3115, 3156, 3682, 3738, 3945, 4361, 5260, 5340, 5523, 6230, 7364, 7476, 7890, 8722, 9205, 9345, 11046, 12460, 12887, 13083, 15780, 17444, 18410, 18690, 21805, 22092, 23407, 25774, 26166, 27615, 36820, 37380, 38661, 43610, 46814, 51548, 52332, 55230, 64435, 65415, 70221, 77322, 87220, 93628, 110460, 117035, 128870, 130830, 140442, 154644, 163849, 193305, 234070, 257740, 261660, 280884, 327698, 351105, 386610, 468140, 491547, 655396, 702210, 773220, 819245, 983094, 1146943, 1404420, 1638490, 1966188, 2293886, 2457735, 3276980, 3440829, 4587772, 4915470, 5734715, 6881658, 9830940, 11469430, 13763316, 17204145, 22938860, 34408290, 68816580]

約数ペア:

[(1, 68816580), (2, 34408290), (3, 22938860), (4, 17204145), (5, 13763316), (6, 11469430), (7, 9830940), (10, 6881658), (12, 5734715), (14, 4915470), (15, 4587772), (20, 3440829), (21, 3276980), (28, 2457735), (30, 2293886), (35, 1966188), (42, 1638490), (49, 1404420), (60, 1146943), (70, 983094), (84, 819245), (89, 773220), (98, 702210), (105, 655396), (140, 491547), (147, 468140), (178, 386610), (196, 351105), (210, 327698), (245, 280884), (263, 261660), (267, 257740), (294, 234070), (356, 193305), (420, 163849), (445, 154644), (490, 140442), (526, 130830), (534, 128870), (588, 117035), (623, 110460), (735, 93628), (789, 87220), (890, 77322), (980, 70221), (1052, 65415), (1068, 64435), (1246, 55230), (1315, 52332), (1335, 51548), (1470, 46814), (1578, 43610), (1780, 38661), (1841, 37380), (1869, 36820), (2492, 27615), (2630, 26166), (2670, 25774), (2940, 23407), (3115, 22092), (3156, 21805), (3682, 18690), (3738, 18410), (3945, 17444), (4361, 15780), (5260, 13083), (5340, 12887), (5523, 12460), (6230, 11046), (7364, 9345), (7476, 9205), (7890, 8722)]