21350072

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:276

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 24269128

約数列:

[1, 2, 4, 8, 19, 23, 31, 38, 46, 62, 76, 92, 124, 152, 184, 197, 248, 394, 437, 589, 713, 788, 874, 1178, 1426, 1576, 1748, 2356, 2852, 3496, 3743, 4531, 4712, 5704, 6107, 7486, 9062, 12214, 13547, 14972, 18124, 24428, 27094, 29944, 36248, 48856, 54188, 86089, 108376, 116033, 140461, 172178, 232066, 280922, 344356, 464132, 561844, 688712, 928264, 1123688, 2668759, 5337518, 10675036, 21350072]

約数ペア:

[(1, 21350072), (2, 10675036), (4, 5337518), (8, 2668759), (19, 1123688), (23, 928264), (31, 688712), (38, 561844), (46, 464132), (62, 344356), (76, 280922), (92, 232066), (124, 172178), (152, 140461), (184, 116033), (197, 108376), (248, 86089), (394, 54188), (437, 48856), (589, 36248), (713, 29944), (788, 27094), (874, 24428), (1178, 18124), (1426, 14972), (1576, 13547), (1748, 12214), (2356, 9062), (2852, 7486), (3496, 6107), (3743, 5704), (4531, 4712)]