21041200

素因数分解:

$2^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{1283}}^1$

素因数の和:1342

約数の個数: 60

約数和(自身を含む): 51824808

約数和(自身を除く): 30783608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 164, 200, 205, 328, 400, 410, 656, 820, 1025, 1283, 1640, 2050, 2566, 3280, 4100, 5132, 6415, 8200, 10264, 12830, 16400, 20528, 25660, 32075, 51320, 52603, 64150, 102640, 105206, 128300, 210412, 256600, 263015, 420824, 513200, 526030, 841648, 1052060, 1315075, 2104120, 2630150, 4208240, 5260300, 10520600, 21041200]

約数ペア:

[(1, 21041200), (2, 10520600), (4, 5260300), (5, 4208240), (8, 2630150), (10, 2104120), (16, 1315075), (20, 1052060), (25, 841648), (40, 526030), (41, 513200), (50, 420824), (80, 263015), (82, 256600), (100, 210412), (164, 128300), (200, 105206), (205, 102640), (328, 64150), (400, 52603), (410, 51320), (656, 32075), (820, 25660), (1025, 20528), (1283, 16400), (1640, 12830), (2050, 10264), (2566, 8200), (3280, 6415), (4100, 5132)]