16221840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{263}}^1$

素因数の和:536

約数の個数: 80

約数和(自身を含む): 50675328

約数和(自身を除く): 34453488

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 257, 263, 514, 526, 771, 789, 1028, 1052, 1285, 1315, 1542, 1578, 2056, 2104, 2570, 2630, 3084, 3156, 3855, 3945, 4112, 4208, 5140, 5260, 6168, 6312, 7710, 7890, 10280, 10520, 12336, 12624, 15420, 15780, 20560, 21040, 30840, 31560, 61680, 63120, 67591, 135182, 202773, 270364, 337955, 405546, 540728, 675910, 811092, 1013865, 1081456, 1351820, 1622184, 2027730, 2703640, 3244368, 4055460, 5407280, 8110920, 16221840]

約数ペア:

[(1, 16221840), (2, 8110920), (3, 5407280), (4, 4055460), (5, 3244368), (6, 2703640), (8, 2027730), (10, 1622184), (12, 1351820), (15, 1081456), (16, 1013865), (20, 811092), (24, 675910), (30, 540728), (40, 405546), (48, 337955), (60, 270364), (80, 202773), (120, 135182), (240, 67591), (257, 63120), (263, 61680), (514, 31560), (526, 30840), (771, 21040), (789, 20560), (1028, 15780), (1052, 15420), (1285, 12624), (1315, 12336), (1542, 10520), (1578, 10280), (2056, 7890), (2104, 7710), (2570, 6312), (2630, 6168), (3084, 5260), (3156, 5140), (3855, 4208), (3945, 4112)]