17928855

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 37132992

約数和(自身を除く): 19204137

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 47, 49, 63, 105, 141, 147, 173, 235, 245, 315, 329, 423, 441, 519, 705, 735, 865, 987, 1211, 1557, 1645, 2115, 2205, 2303, 2595, 2961, 3633, 4935, 6055, 6909, 7785, 8131, 8477, 10899, 11515, 14805, 18165, 20727, 24393, 25431, 34545, 40655, 42385, 54495, 56917, 73179, 76293, 103635, 121965, 127155, 170751, 284585, 365895, 381465, 398419, 512253, 853755, 1195257, 1992095, 2561265, 3585771, 5976285, 17928855]

約数ペア:

[(1, 17928855), (3, 5976285), (5, 3585771), (7, 2561265), (9, 1992095), (15, 1195257), (21, 853755), (35, 512253), (45, 398419), (47, 381465), (49, 365895), (63, 284585), (105, 170751), (141, 127155), (147, 121965), (173, 103635), (235, 76293), (245, 73179), (315, 56917), (329, 54495), (423, 42385), (441, 40655), (519, 34545), (705, 25431), (735, 24393), (865, 20727), (987, 18165), (1211, 14805), (1557, 11515), (1645, 10899), (2115, 8477), (2205, 8131), (2303, 7785), (2595, 6909), (2961, 6055), (3633, 4935)]