20463380

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:206

約数の個数: 96

約数和(自身を含む): 53088000

約数和(自身を除く): 32624620

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 157, 190, 196, 245, 266, 314, 343, 380, 490, 532, 628, 665, 686, 785, 931, 980, 1099, 1330, 1372, 1570, 1715, 1862, 2198, 2660, 2983, 3140, 3430, 3724, 4396, 4655, 5495, 5966, 6517, 6860, 7693, 9310, 10990, 11932, 13034, 14915, 15386, 18620, 20881, 21980, 26068, 29830, 30772, 32585, 38465, 41762, 53851, 59660, 65170, 76930, 83524, 104405, 107702, 130340, 146167, 153860, 208810, 215404, 269255, 292334, 417620, 538510, 584668, 730835, 1023169, 1077020, 1461670, 2046338, 2923340, 4092676, 5115845, 10231690, 20463380]

約数ペア:

[(1, 20463380), (2, 10231690), (4, 5115845), (5, 4092676), (7, 2923340), (10, 2046338), (14, 1461670), (19, 1077020), (20, 1023169), (28, 730835), (35, 584668), (38, 538510), (49, 417620), (70, 292334), (76, 269255), (95, 215404), (98, 208810), (133, 153860), (140, 146167), (157, 130340), (190, 107702), (196, 104405), (245, 83524), (266, 76930), (314, 65170), (343, 59660), (380, 53851), (490, 41762), (532, 38465), (628, 32585), (665, 30772), (686, 29830), (785, 26068), (931, 21980), (980, 20881), (1099, 18620), (1330, 15386), (1372, 14915), (1570, 13034), (1715, 11932), (1862, 10990), (2198, 9310), (2660, 7693), (2983, 6860), (3140, 6517), (3430, 5966), (3724, 5495), (4396, 4655)]