81516120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1831}}^1$

素因数の和:1905

約数の個数: 128

約数和(自身を含む): 284912640

約数和(自身を除く): 203396520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 53, 56, 60, 70, 84, 105, 106, 120, 140, 159, 168, 210, 212, 265, 280, 318, 371, 420, 424, 530, 636, 742, 795, 840, 1060, 1113, 1272, 1484, 1590, 1831, 1855, 2120, 2226, 2968, 3180, 3662, 3710, 4452, 5493, 5565, 6360, 7324, 7420, 8904, 9155, 10986, 11130, 12817, 14648, 14840, 18310, 21972, 22260, 25634, 27465, 36620, 38451, 43944, 44520, 51268, 54930, 64085, 73240, 76902, 97043, 102536, 109860, 128170, 153804, 192255, 194086, 219720, 256340, 291129, 307608, 384510, 388172, 485215, 512680, 582258, 679301, 769020, 776344, 970430, 1164516, 1358602, 1455645, 1538040, 1940860, 2037903, 2329032, 2717204, 2911290, 3396505, 3881720, 4075806, 5434408, 5822580, 6793010, 8151612, 10189515, 11645160, 13586020, 16303224, 20379030, 27172040, 40758060, 81516120]

約数ペア:

[(1, 81516120), (2, 40758060), (3, 27172040), (4, 20379030), (5, 16303224), (6, 13586020), (7, 11645160), (8, 10189515), (10, 8151612), (12, 6793010), (14, 5822580), (15, 5434408), (20, 4075806), (21, 3881720), (24, 3396505), (28, 2911290), (30, 2717204), (35, 2329032), (40, 2037903), (42, 1940860), (53, 1538040), (56, 1455645), (60, 1358602), (70, 1164516), (84, 970430), (105, 776344), (106, 769020), (120, 679301), (140, 582258), (159, 512680), (168, 485215), (210, 388172), (212, 384510), (265, 307608), (280, 291129), (318, 256340), (371, 219720), (420, 194086), (424, 192255), (530, 153804), (636, 128170), (742, 109860), (795, 102536), (840, 97043), (1060, 76902), (1113, 73240), (1272, 64085), (1484, 54930), (1590, 51268), (1831, 44520), (1855, 43944), (2120, 38451), (2226, 36620), (2968, 27465), (3180, 25634), (3662, 22260), (3710, 21972), (4452, 18310), (5493, 14840), (5565, 14648), (6360, 12817), (7324, 11130), (7420, 10986), (8904, 9155)]