18640080

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{25889}}^1$

素因数の和:25908

約数の個数: 60

約数和(自身を含む): 62602020

約数和(自身を除く): 43961940

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 25889, 51778, 77667, 103556, 129445, 155334, 207112, 233001, 258890, 310668, 388335, 414224, 466002, 517780, 621336, 776670, 932004, 1035560, 1165005, 1242672, 1553340, 1864008, 2071120, 2330010, 3106680, 3728016, 4660020, 6213360, 9320040, 18640080]

約数ペア:

[(1, 18640080), (2, 9320040), (3, 6213360), (4, 4660020), (5, 3728016), (6, 3106680), (8, 2330010), (9, 2071120), (10, 1864008), (12, 1553340), (15, 1242672), (16, 1165005), (18, 1035560), (20, 932004), (24, 776670), (30, 621336), (36, 517780), (40, 466002), (45, 414224), (48, 388335), (60, 310668), (72, 258890), (80, 233001), (90, 207112), (120, 155334), (144, 129445), (180, 103556), (240, 77667), (360, 51778), (720, 25889)]