81545640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{379}}^1$

素因数の和:567

約数の個数: 128

約数和(自身を含む): 269222400

約数和(自身を除く): 187676760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 163, 165, 220, 264, 326, 330, 379, 440, 489, 652, 660, 758, 815, 978, 1137, 1304, 1320, 1516, 1630, 1793, 1895, 1956, 2274, 2445, 3032, 3260, 3586, 3790, 3912, 4169, 4548, 4890, 5379, 5685, 6520, 7172, 7580, 8338, 8965, 9096, 9780, 10758, 11370, 12507, 14344, 15160, 16676, 17930, 19560, 20845, 21516, 22740, 25014, 26895, 33352, 35860, 41690, 43032, 45480, 50028, 53790, 61777, 62535, 71720, 83380, 100056, 107580, 123554, 125070, 166760, 185331, 215160, 247108, 250140, 308885, 370662, 494216, 500280, 617770, 679547, 741324, 926655, 1235540, 1359094, 1482648, 1853310, 2038641, 2471080, 2718188, 3397735, 3706620, 4077282, 5436376, 6795470, 7413240, 8154564, 10193205, 13590940, 16309128, 20386410, 27181880, 40772820, 81545640]

約数ペア:

[(1, 81545640), (2, 40772820), (3, 27181880), (4, 20386410), (5, 16309128), (6, 13590940), (8, 10193205), (10, 8154564), (11, 7413240), (12, 6795470), (15, 5436376), (20, 4077282), (22, 3706620), (24, 3397735), (30, 2718188), (33, 2471080), (40, 2038641), (44, 1853310), (55, 1482648), (60, 1359094), (66, 1235540), (88, 926655), (110, 741324), (120, 679547), (132, 617770), (163, 500280), (165, 494216), (220, 370662), (264, 308885), (326, 250140), (330, 247108), (379, 215160), (440, 185331), (489, 166760), (652, 125070), (660, 123554), (758, 107580), (815, 100056), (978, 83380), (1137, 71720), (1304, 62535), (1320, 61777), (1516, 53790), (1630, 50028), (1793, 45480), (1895, 43032), (1956, 41690), (2274, 35860), (2445, 33352), (3032, 26895), (3260, 25014), (3586, 22740), (3790, 21516), (3912, 20845), (4169, 19560), (4548, 17930), (4890, 16676), (5379, 15160), (5685, 14344), (6520, 12507), (7172, 11370), (7580, 10758), (8338, 9780), (8965, 9096)]