81954840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1321}}^1$

素因数の和:1393

約数の個数: 128

約数和(自身を含む): 274129920

約数和(自身を除く): 192175080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 47, 55, 60, 66, 88, 94, 110, 120, 132, 141, 165, 188, 220, 235, 264, 282, 330, 376, 440, 470, 517, 564, 660, 705, 940, 1034, 1128, 1320, 1321, 1410, 1551, 1880, 2068, 2585, 2642, 2820, 3102, 3963, 4136, 5170, 5284, 5640, 6204, 6605, 7755, 7926, 10340, 10568, 12408, 13210, 14531, 15510, 15852, 19815, 20680, 26420, 29062, 31020, 31704, 39630, 43593, 52840, 58124, 62040, 62087, 72655, 79260, 87186, 116248, 124174, 145310, 158520, 174372, 186261, 217965, 248348, 290620, 310435, 348744, 372522, 435930, 496696, 581240, 620870, 682957, 745044, 871860, 931305, 1241740, 1365914, 1490088, 1743720, 1862610, 2048871, 2483480, 2731828, 3414785, 3725220, 4097742, 5463656, 6829570, 7450440, 8195484, 10244355, 13659140, 16390968, 20488710, 27318280, 40977420, 81954840]

約数ペア:

[(1, 81954840), (2, 40977420), (3, 27318280), (4, 20488710), (5, 16390968), (6, 13659140), (8, 10244355), (10, 8195484), (11, 7450440), (12, 6829570), (15, 5463656), (20, 4097742), (22, 3725220), (24, 3414785), (30, 2731828), (33, 2483480), (40, 2048871), (44, 1862610), (47, 1743720), (55, 1490088), (60, 1365914), (66, 1241740), (88, 931305), (94, 871860), (110, 745044), (120, 682957), (132, 620870), (141, 581240), (165, 496696), (188, 435930), (220, 372522), (235, 348744), (264, 310435), (282, 290620), (330, 248348), (376, 217965), (440, 186261), (470, 174372), (517, 158520), (564, 145310), (660, 124174), (705, 116248), (940, 87186), (1034, 79260), (1128, 72655), (1320, 62087), (1321, 62040), (1410, 58124), (1551, 52840), (1880, 43593), (2068, 39630), (2585, 31704), (2642, 31020), (2820, 29062), (3102, 26420), (3963, 20680), (4136, 19815), (5170, 15852), (5284, 15510), (5640, 14531), (6204, 13210), (6605, 12408), (7755, 10568), (7926, 10340)]