81485360

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:187

約数の個数: 160

約数和(自身を含む): 222842880

約数和(自身を除く): 141357520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 31, 40, 44, 55, 58, 62, 80, 88, 103, 110, 116, 124, 145, 155, 176, 206, 220, 232, 248, 290, 310, 319, 341, 412, 440, 464, 496, 515, 580, 620, 638, 682, 824, 880, 899, 1030, 1133, 1160, 1240, 1276, 1364, 1595, 1648, 1705, 1798, 2060, 2266, 2320, 2480, 2552, 2728, 2987, 3190, 3193, 3410, 3596, 4120, 4495, 4532, 5104, 5456, 5665, 5974, 6380, 6386, 6820, 7192, 8240, 8990, 9064, 9889, 11330, 11948, 12760, 12772, 13640, 14384, 14935, 15965, 17980, 18128, 19778, 22660, 23896, 25520, 25544, 27280, 29870, 31930, 32857, 35123, 35960, 39556, 45320, 47792, 49445, 51088, 59740, 63860, 65714, 70246, 71920, 79112, 90640, 92597, 98890, 119480, 127720, 131428, 140492, 158224, 164285, 175615, 185194, 197780, 238960, 255440, 262856, 280984, 328570, 351230, 370388, 395560, 462985, 525712, 561968, 657140, 702460, 740776, 791120, 925970, 1018567, 1314280, 1404920, 1481552, 1851940, 2037134, 2628560, 2809840, 3703880, 4074268, 5092835, 7407760, 8148536, 10185670, 16297072, 20371340, 40742680, 81485360]

約数ペア:

[(1, 81485360), (2, 40742680), (4, 20371340), (5, 16297072), (8, 10185670), (10, 8148536), (11, 7407760), (16, 5092835), (20, 4074268), (22, 3703880), (29, 2809840), (31, 2628560), (40, 2037134), (44, 1851940), (55, 1481552), (58, 1404920), (62, 1314280), (80, 1018567), (88, 925970), (103, 791120), (110, 740776), (116, 702460), (124, 657140), (145, 561968), (155, 525712), (176, 462985), (206, 395560), (220, 370388), (232, 351230), (248, 328570), (290, 280984), (310, 262856), (319, 255440), (341, 238960), (412, 197780), (440, 185194), (464, 175615), (496, 164285), (515, 158224), (580, 140492), (620, 131428), (638, 127720), (682, 119480), (824, 98890), (880, 92597), (899, 90640), (1030, 79112), (1133, 71920), (1160, 70246), (1240, 65714), (1276, 63860), (1364, 59740), (1595, 51088), (1648, 49445), (1705, 47792), (1798, 45320), (2060, 39556), (2266, 35960), (2320, 35123), (2480, 32857), (2552, 31930), (2728, 29870), (2987, 27280), (3190, 25544), (3193, 25520), (3410, 23896), (3596, 22660), (4120, 19778), (4495, 18128), (4532, 17980), (5104, 15965), (5456, 14935), (5665, 14384), (5974, 13640), (6380, 12772), (6386, 12760), (6820, 11948), (7192, 11330), (8240, 9889), (8990, 9064)]