76578180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^3\times {\mathrm{61}}^2$

素因数の和:155

約数の個数: 144

約数和(自身を含む): 254217600

約数和(自身を除く): 177639420

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 61, 70, 84, 98, 105, 122, 140, 147, 183, 196, 210, 244, 245, 294, 305, 343, 366, 420, 427, 490, 588, 610, 686, 732, 735, 854, 915, 980, 1029, 1220, 1281, 1372, 1470, 1708, 1715, 1830, 2058, 2135, 2562, 2940, 2989, 3430, 3660, 3721, 4116, 4270, 5124, 5145, 5978, 6405, 6860, 7442, 8540, 8967, 10290, 11163, 11956, 12810, 14884, 14945, 17934, 18605, 20580, 20923, 22326, 25620, 26047, 29890, 35868, 37210, 41846, 44652, 44835, 52094, 55815, 59780, 62769, 74420, 78141, 83692, 89670, 104188, 104615, 111630, 125538, 130235, 156282, 179340, 182329, 209230, 223260, 251076, 260470, 312564, 313845, 364658, 390705, 418460, 520940, 546987, 627690, 729316, 781410, 911645, 1093974, 1255380, 1276303, 1562820, 1823290, 2187948, 2552606, 2734935, 3646580, 3828909, 5105212, 5469870, 6381515, 7657818, 10939740, 12763030, 15315636, 19144545, 25526060, 38289090, 76578180]

約数ペア:

[(1, 76578180), (2, 38289090), (3, 25526060), (4, 19144545), (5, 15315636), (6, 12763030), (7, 10939740), (10, 7657818), (12, 6381515), (14, 5469870), (15, 5105212), (20, 3828909), (21, 3646580), (28, 2734935), (30, 2552606), (35, 2187948), (42, 1823290), (49, 1562820), (60, 1276303), (61, 1255380), (70, 1093974), (84, 911645), (98, 781410), (105, 729316), (122, 627690), (140, 546987), (147, 520940), (183, 418460), (196, 390705), (210, 364658), (244, 313845), (245, 312564), (294, 260470), (305, 251076), (343, 223260), (366, 209230), (420, 182329), (427, 179340), (490, 156282), (588, 130235), (610, 125538), (686, 111630), (732, 104615), (735, 104188), (854, 89670), (915, 83692), (980, 78141), (1029, 74420), (1220, 62769), (1281, 59780), (1372, 55815), (1470, 52094), (1708, 44835), (1715, 44652), (1830, 41846), (2058, 37210), (2135, 35868), (2562, 29890), (2940, 26047), (2989, 25620), (3430, 22326), (3660, 20923), (3721, 20580), (4116, 18605), (4270, 17934), (5124, 14945), (5145, 14884), (5978, 12810), (6405, 11956), (6860, 11163), (7442, 10290), (8540, 8967)]