81521940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1069}}^1$

素因数の和:1153

約数の個数: 96

約数和(自身を含む): 241597440

約数和(自身を除く): 160075500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 41, 60, 62, 82, 93, 123, 124, 155, 164, 186, 205, 246, 310, 372, 410, 465, 492, 615, 620, 820, 930, 1069, 1230, 1271, 1860, 2138, 2460, 2542, 3207, 3813, 4276, 5084, 5345, 6355, 6414, 7626, 10690, 12710, 12828, 15252, 16035, 19065, 21380, 25420, 32070, 33139, 38130, 43829, 64140, 66278, 76260, 87658, 99417, 131487, 132556, 165695, 175316, 198834, 219145, 262974, 331390, 397668, 438290, 497085, 525948, 657435, 662780, 876580, 994170, 1314870, 1358699, 1988340, 2629740, 2717398, 4076097, 5434796, 6793495, 8152194, 13586990, 16304388, 20380485, 27173980, 40760970, 81521940]

約数ペア:

[(1, 81521940), (2, 40760970), (3, 27173980), (4, 20380485), (5, 16304388), (6, 13586990), (10, 8152194), (12, 6793495), (15, 5434796), (20, 4076097), (30, 2717398), (31, 2629740), (41, 1988340), (60, 1358699), (62, 1314870), (82, 994170), (93, 876580), (123, 662780), (124, 657435), (155, 525948), (164, 497085), (186, 438290), (205, 397668), (246, 331390), (310, 262974), (372, 219145), (410, 198834), (465, 175316), (492, 165695), (615, 132556), (620, 131487), (820, 99417), (930, 87658), (1069, 76260), (1230, 66278), (1271, 64140), (1860, 43829), (2138, 38130), (2460, 33139), (2542, 32070), (3207, 25420), (3813, 21380), (4276, 19065), (5084, 16035), (5345, 15252), (6355, 12828), (6414, 12710), (7626, 10690)]