17920720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13177}}^1$

素因数の和:13207

約数の個数: 40

約数和(自身を含む): 44119944

約数和(自身を除く): 26199224

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13177, 26354, 52708, 65885, 105416, 131770, 210832, 224009, 263540, 448018, 527080, 896036, 1054160, 1120045, 1792072, 2240090, 3584144, 4480180, 8960360, 17920720]

約数ペア:

[(1, 17920720), (2, 8960360), (4, 4480180), (5, 3584144), (8, 2240090), (10, 1792072), (16, 1120045), (17, 1054160), (20, 896036), (34, 527080), (40, 448018), (68, 263540), (80, 224009), (85, 210832), (136, 131770), (170, 105416), (272, 65885), (340, 52708), (680, 26354), (1360, 13177)]