19931720

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2753}}^1$

素因数の和:2945

約数の個数: 32

約数和(自身を含む): 45110520

約数和(自身を除く): 25178800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 2753, 3620, 5506, 7240, 11012, 13765, 22024, 27530, 55060, 110120, 498293, 996586, 1993172, 2491465, 3986344, 4982930, 9965860, 19931720]

約数ペア:

[(1, 19931720), (2, 9965860), (4, 4982930), (5, 3986344), (8, 2491465), (10, 1993172), (20, 996586), (40, 498293), (181, 110120), (362, 55060), (724, 27530), (905, 22024), (1448, 13765), (1810, 11012), (2753, 7240), (3620, 5506)]