21265370

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{271}}^1$

素因数の和:363

約数の個数: 64

約数和(自身を含む): 47001600

約数和(自身を除く): 25736230

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 59, 70, 95, 118, 133, 190, 266, 271, 295, 413, 542, 590, 665, 826, 1121, 1330, 1355, 1897, 2065, 2242, 2710, 3794, 4130, 5149, 5605, 7847, 9485, 10298, 11210, 15694, 15989, 18970, 25745, 31978, 36043, 39235, 51490, 72086, 78470, 79945, 111923, 159890, 180215, 223846, 303791, 360430, 559615, 607582, 1119230, 1518955, 2126537, 3037910, 4253074, 10632685, 21265370]

約数ペア:

[(1, 21265370), (2, 10632685), (5, 4253074), (7, 3037910), (10, 2126537), (14, 1518955), (19, 1119230), (35, 607582), (38, 559615), (59, 360430), (70, 303791), (95, 223846), (118, 180215), (133, 159890), (190, 111923), (266, 79945), (271, 78470), (295, 72086), (413, 51490), (542, 39235), (590, 36043), (665, 31978), (826, 25745), (1121, 18970), (1330, 15989), (1355, 15694), (1897, 11210), (2065, 10298), (2242, 9485), (2710, 7847), (3794, 5605), (4130, 5149)]