20129590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{277}}^1$

素因数の和:353

約数の個数: 48

約数和(自身を含む): 40292208

約数和(自身を除く): 20162618

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 169, 215, 277, 338, 430, 554, 559, 845, 1118, 1385, 1690, 2770, 2795, 3601, 5590, 7202, 7267, 11911, 14534, 18005, 23822, 36010, 36335, 46813, 59555, 72670, 93626, 119110, 154843, 234065, 309686, 468130, 774215, 1548430, 2012959, 4025918, 10064795, 20129590]

約数ペア:

[(1, 20129590), (2, 10064795), (5, 4025918), (10, 2012959), (13, 1548430), (26, 774215), (43, 468130), (65, 309686), (86, 234065), (130, 154843), (169, 119110), (215, 93626), (277, 72670), (338, 59555), (430, 46813), (554, 36335), (559, 36010), (845, 23822), (1118, 18005), (1385, 14534), (1690, 11911), (2770, 7267), (2795, 7202), (3601, 5590)]