20446240

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7517}}^1$

素因数の和:7549

約数の個数: 48

約数和(自身を含む): 51152472

約数和(自身を除く): 30706232

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7517, 15034, 30068, 37585, 60136, 75170, 120272, 127789, 150340, 240544, 255578, 300680, 511156, 601360, 638945, 1022312, 1202720, 1277890, 2044624, 2555780, 4089248, 5111560, 10223120, 20446240]

約数ペア:

[(1, 20446240), (2, 10223120), (4, 5111560), (5, 4089248), (8, 2555780), (10, 2044624), (16, 1277890), (17, 1202720), (20, 1022312), (32, 638945), (34, 601360), (40, 511156), (68, 300680), (80, 255578), (85, 240544), (136, 150340), (160, 127789), (170, 120272), (272, 75170), (340, 60136), (544, 37585), (680, 30068), (1360, 15034), (2720, 7517)]