25357880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:536

約数の個数: 64

約数和(自身を含む): 61236000

約数和(自身を除く): 35878120

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 89, 136, 170, 178, 340, 356, 419, 445, 680, 712, 838, 890, 1513, 1676, 1780, 2095, 3026, 3352, 3560, 4190, 6052, 7123, 7565, 8380, 12104, 14246, 15130, 16760, 28492, 30260, 35615, 37291, 56984, 60520, 71230, 74582, 142460, 149164, 186455, 284920, 298328, 372910, 633947, 745820, 1267894, 1491640, 2535788, 3169735, 5071576, 6339470, 12678940, 25357880]

約数ペア:

[(1, 25357880), (2, 12678940), (4, 6339470), (5, 5071576), (8, 3169735), (10, 2535788), (17, 1491640), (20, 1267894), (34, 745820), (40, 633947), (68, 372910), (85, 298328), (89, 284920), (136, 186455), (170, 149164), (178, 142460), (340, 74582), (356, 71230), (419, 60520), (445, 56984), (680, 37291), (712, 35615), (838, 30260), (890, 28492), (1513, 16760), (1676, 15130), (1780, 14246), (2095, 12104), (3026, 8380), (3352, 7565), (3560, 7123), (4190, 6052)]