20908191745

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1\times {\mathrm{2017}}^1$

素因数の和:2294

約数の個数: 64

約数和(自身を含む): 30500536320

約数和(自身を除く): 9592344575

約数列:

[1, 5, 7, 23, 35, 79, 115, 161, 163, 395, 553, 805, 815, 1141, 1817, 2017, 2765, 3749, 5705, 9085, 10085, 12719, 12877, 14119, 18745, 26243, 46391, 63595, 64385, 70595, 90139, 131215, 159343, 231955, 296171, 324737, 328771, 450695, 796715, 1115401, 1480855, 1623685, 1643855, 2073197, 2301397, 3664889, 5577005, 7561733, 10365985, 11506985, 18324445, 25654223, 25972909, 37808665, 52932131, 128271115, 129864545, 181810363, 264660655, 597376907, 909051815, 2986884535, 4181638349, 20908191745]

約数ペア:

[(1, 20908191745), (5, 4181638349), (7, 2986884535), (23, 909051815), (35, 597376907), (79, 264660655), (115, 181810363), (161, 129864545), (163, 128271115), (395, 52932131), (553, 37808665), (805, 25972909), (815, 25654223), (1141, 18324445), (1817, 11506985), (2017, 10365985), (2765, 7561733), (3749, 5577005), (5705, 3664889), (9085, 2301397), (10085, 2073197), (12719, 1643855), (12877, 1623685), (14119, 1480855), (18745, 1115401), (26243, 796715), (46391, 450695), (63595, 328771), (64385, 324737), (70595, 296171), (90139, 231955), (131215, 159343)]