261567420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{397}}^1$

素因数の和:627

約数の個数: 96

約数和(自身を含む): 748876800

約数和(自身を除く): 487309380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 79, 139, 158, 237, 278, 316, 395, 397, 417, 474, 556, 695, 790, 794, 834, 948, 1185, 1191, 1390, 1580, 1588, 1668, 1985, 2085, 2370, 2382, 2780, 3970, 4170, 4740, 4764, 5955, 7940, 8340, 10981, 11910, 21962, 23820, 31363, 32943, 43924, 54905, 55183, 62726, 65886, 94089, 109810, 110366, 125452, 131772, 156815, 164715, 165549, 188178, 219620, 220732, 275915, 313630, 329430, 331098, 376356, 470445, 551830, 627260, 658860, 662196, 827745, 940890, 1103660, 1655490, 1881780, 3310980, 4359457, 8718914, 13078371, 17437828, 21797285, 26156742, 43594570, 52313484, 65391855, 87189140, 130783710, 261567420]

約数ペア:

[(1, 261567420), (2, 130783710), (3, 87189140), (4, 65391855), (5, 52313484), (6, 43594570), (10, 26156742), (12, 21797285), (15, 17437828), (20, 13078371), (30, 8718914), (60, 4359457), (79, 3310980), (139, 1881780), (158, 1655490), (237, 1103660), (278, 940890), (316, 827745), (395, 662196), (397, 658860), (417, 627260), (474, 551830), (556, 470445), (695, 376356), (790, 331098), (794, 329430), (834, 313630), (948, 275915), (1185, 220732), (1191, 219620), (1390, 188178), (1580, 165549), (1588, 164715), (1668, 156815), (1985, 131772), (2085, 125452), (2370, 110366), (2382, 109810), (2780, 94089), (3970, 65886), (4170, 62726), (4740, 55183), (4764, 54905), (5955, 43924), (7940, 32943), (8340, 31363), (10981, 23820), (11910, 21962)]