20254570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:287

約数の個数: 64

約数和(自身を含む): 44593920

約数和(自身を除く): 24339350

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 97, 133, 157, 190, 194, 266, 314, 485, 665, 679, 785, 970, 1099, 1330, 1358, 1570, 1843, 2198, 2983, 3395, 3686, 5495, 5966, 6790, 9215, 10990, 12901, 14915, 15229, 18430, 20881, 25802, 29830, 30458, 41762, 64505, 76145, 104405, 106603, 129010, 152290, 208810, 213206, 289351, 533015, 578702, 1066030, 1446755, 2025457, 2893510, 4050914, 10127285, 20254570]

約数ペア:

[(1, 20254570), (2, 10127285), (5, 4050914), (7, 2893510), (10, 2025457), (14, 1446755), (19, 1066030), (35, 578702), (38, 533015), (70, 289351), (95, 213206), (97, 208810), (133, 152290), (157, 129010), (190, 106603), (194, 104405), (266, 76145), (314, 64505), (485, 41762), (665, 30458), (679, 29830), (785, 25802), (970, 20881), (1099, 18430), (1330, 15229), (1358, 14915), (1570, 12901), (1843, 10990), (2198, 9215), (2983, 6790), (3395, 5966), (3686, 5495)]