1999320820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{460673}}^1$

素因数の和:460720

約数の個数: 48

約数和(自身を含む): 4953166848

約数和(自身を除く): 2953846028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 460673, 921346, 1842692, 2303365, 3224711, 4606730, 6449422, 9213460, 12898844, 14280863, 16123555, 28561726, 32247110, 57123452, 64494220, 71404315, 99966041, 142808630, 199932082, 285617260, 399864164, 499830205, 999660410, 1999320820]

約数ペア:

[(1, 1999320820), (2, 999660410), (4, 499830205), (5, 399864164), (7, 285617260), (10, 199932082), (14, 142808630), (20, 99966041), (28, 71404315), (31, 64494220), (35, 57123452), (62, 32247110), (70, 28561726), (124, 16123555), (140, 14280863), (155, 12898844), (217, 9213460), (310, 6449422), (434, 4606730), (620, 3224711), (868, 2303365), (1085, 1842692), (2170, 921346), (4340, 460673)]