21566368

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{449}}^1$

素因数の和:557

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 23793632

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 79, 152, 158, 304, 316, 449, 608, 632, 898, 1264, 1501, 1796, 2528, 3002, 3592, 6004, 7184, 8531, 12008, 14368, 17062, 24016, 34124, 35471, 48032, 68248, 70942, 136496, 141884, 272992, 283768, 567536, 673949, 1135072, 1347898, 2695796, 5391592, 10783184, 21566368]

約数ペア:

[(1, 21566368), (2, 10783184), (4, 5391592), (8, 2695796), (16, 1347898), (19, 1135072), (32, 673949), (38, 567536), (76, 283768), (79, 272992), (152, 141884), (158, 136496), (304, 70942), (316, 68248), (449, 48032), (608, 35471), (632, 34124), (898, 24016), (1264, 17062), (1501, 14368), (1796, 12008), (2528, 8531), (3002, 7184), (3592, 6004)]