20889008

素因数分解:

$2^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4549}}^1$

素因数の和:4605

約数の個数: 40

約数和(自身を含む): 47392800

約数和(自身を除く): 26503792

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 56, 82, 112, 164, 287, 328, 574, 656, 1148, 2296, 4549, 4592, 9098, 18196, 31843, 36392, 63686, 72784, 127372, 186509, 254744, 373018, 509488, 746036, 1305563, 1492072, 2611126, 2984144, 5222252, 10444504, 20889008]

約数ペア:

[(1, 20889008), (2, 10444504), (4, 5222252), (7, 2984144), (8, 2611126), (14, 1492072), (16, 1305563), (28, 746036), (41, 509488), (56, 373018), (82, 254744), (112, 186509), (164, 127372), (287, 72784), (328, 63686), (574, 36392), (656, 31843), (1148, 18196), (2296, 9098), (4549, 4592)]