87720080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{163}}^1$

素因数の和:245

約数の個数: 120

約数和(自身を含む): 242323776

約数和(自身を除く): 154603696

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 163, 217, 248, 280, 310, 326, 434, 496, 560, 620, 652, 815, 868, 961, 1085, 1141, 1240, 1304, 1630, 1736, 1922, 2170, 2282, 2480, 2608, 3260, 3472, 3844, 4340, 4564, 4805, 5053, 5705, 6520, 6727, 7688, 8680, 9128, 9610, 10106, 11410, 13040, 13454, 15376, 17360, 18256, 19220, 20212, 22820, 25265, 26908, 33635, 35371, 38440, 40424, 45640, 50530, 53816, 67270, 70742, 76880, 80848, 91280, 101060, 107632, 134540, 141484, 156643, 176855, 202120, 269080, 282968, 313286, 353710, 404240, 538160, 565936, 626572, 707420, 783215, 1096501, 1253144, 1414840, 1566430, 2193002, 2506288, 2829680, 3132860, 4386004, 5482505, 6265720, 8772008, 10965010, 12531440, 17544016, 21930020, 43860040, 87720080]

約数ペア:

[(1, 87720080), (2, 43860040), (4, 21930020), (5, 17544016), (7, 12531440), (8, 10965010), (10, 8772008), (14, 6265720), (16, 5482505), (20, 4386004), (28, 3132860), (31, 2829680), (35, 2506288), (40, 2193002), (56, 1566430), (62, 1414840), (70, 1253144), (80, 1096501), (112, 783215), (124, 707420), (140, 626572), (155, 565936), (163, 538160), (217, 404240), (248, 353710), (280, 313286), (310, 282968), (326, 269080), (434, 202120), (496, 176855), (560, 156643), (620, 141484), (652, 134540), (815, 107632), (868, 101060), (961, 91280), (1085, 80848), (1141, 76880), (1240, 70742), (1304, 67270), (1630, 53816), (1736, 50530), (1922, 45640), (2170, 40424), (2282, 38440), (2480, 35371), (2608, 33635), (3260, 26908), (3472, 25265), (3844, 22820), (4340, 20212), (4564, 19220), (4805, 18256), (5053, 17360), (5705, 15376), (6520, 13454), (6727, 13040), (7688, 11410), (8680, 10106), (9128, 9610)]