81464280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:465

約数の個数: 128

約数和(自身を含む): 257126400

約数和(自身を除く): 175662120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 61, 62, 93, 120, 122, 124, 155, 183, 186, 244, 248, 305, 310, 359, 366, 372, 465, 488, 610, 620, 718, 732, 744, 915, 930, 1077, 1220, 1240, 1436, 1464, 1795, 1830, 1860, 1891, 2154, 2440, 2872, 3590, 3660, 3720, 3782, 4308, 5385, 5673, 7180, 7320, 7564, 8616, 9455, 10770, 11129, 11346, 14360, 15128, 18910, 21540, 21899, 22258, 22692, 28365, 33387, 37820, 43080, 43798, 44516, 45384, 55645, 56730, 65697, 66774, 75640, 87596, 89032, 109495, 111290, 113460, 131394, 133548, 166935, 175192, 218990, 222580, 226920, 262788, 267096, 328485, 333870, 437980, 445160, 525576, 656970, 667740, 678869, 875960, 1313940, 1335480, 1357738, 2036607, 2627880, 2715476, 3394345, 4073214, 5430952, 6788690, 8146428, 10183035, 13577380, 16292856, 20366070, 27154760, 40732140, 81464280]

約数ペア:

[(1, 81464280), (2, 40732140), (3, 27154760), (4, 20366070), (5, 16292856), (6, 13577380), (8, 10183035), (10, 8146428), (12, 6788690), (15, 5430952), (20, 4073214), (24, 3394345), (30, 2715476), (31, 2627880), (40, 2036607), (60, 1357738), (61, 1335480), (62, 1313940), (93, 875960), (120, 678869), (122, 667740), (124, 656970), (155, 525576), (183, 445160), (186, 437980), (244, 333870), (248, 328485), (305, 267096), (310, 262788), (359, 226920), (366, 222580), (372, 218990), (465, 175192), (488, 166935), (610, 133548), (620, 131394), (718, 113460), (732, 111290), (744, 109495), (915, 89032), (930, 87596), (1077, 75640), (1220, 66774), (1240, 65697), (1436, 56730), (1464, 55645), (1795, 45384), (1830, 44516), (1860, 43798), (1891, 43080), (2154, 37820), (2440, 33387), (2872, 28365), (3590, 22692), (3660, 22258), (3720, 21899), (3782, 21540), (4308, 18910), (5385, 15128), (5673, 14360), (7180, 11346), (7320, 11129), (7564, 10770), (8616, 9455)]