19628140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 50964480

約数和(自身を除く): 31336340

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 47, 70, 76, 94, 95, 133, 140, 157, 188, 190, 235, 266, 314, 329, 380, 470, 532, 628, 658, 665, 785, 893, 940, 1099, 1316, 1330, 1570, 1645, 1786, 2198, 2660, 2983, 3140, 3290, 3572, 4396, 4465, 5495, 5966, 6251, 6580, 7379, 8930, 10990, 11932, 12502, 14758, 14915, 17860, 20881, 21980, 25004, 29516, 29830, 31255, 36895, 41762, 51653, 59660, 62510, 73790, 83524, 103306, 104405, 125020, 140201, 147580, 206612, 208810, 258265, 280402, 417620, 516530, 560804, 701005, 981407, 1033060, 1402010, 1962814, 2804020, 3925628, 4907035, 9814070, 19628140]

約数ペア:

[(1, 19628140), (2, 9814070), (4, 4907035), (5, 3925628), (7, 2804020), (10, 1962814), (14, 1402010), (19, 1033060), (20, 981407), (28, 701005), (35, 560804), (38, 516530), (47, 417620), (70, 280402), (76, 258265), (94, 208810), (95, 206612), (133, 147580), (140, 140201), (157, 125020), (188, 104405), (190, 103306), (235, 83524), (266, 73790), (314, 62510), (329, 59660), (380, 51653), (470, 41762), (532, 36895), (628, 31255), (658, 29830), (665, 29516), (785, 25004), (893, 21980), (940, 20881), (1099, 17860), (1316, 14915), (1330, 14758), (1570, 12502), (1645, 11932), (1786, 10990), (2198, 8930), (2660, 7379), (2983, 6580), (3140, 6251), (3290, 5966), (3572, 5495), (4396, 4465)]