1640840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 4147200

約数和(自身を除く): 2506360

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 127, 136, 152, 170, 190, 254, 323, 340, 380, 508, 635, 646, 680, 760, 1016, 1270, 1292, 1615, 2159, 2413, 2540, 2584, 3230, 4318, 4826, 5080, 6460, 8636, 9652, 10795, 12065, 12920, 17272, 19304, 21590, 24130, 41021, 43180, 48260, 82042, 86360, 96520, 164084, 205105, 328168, 410210, 820420, 1640840]

約数ペア:

[(1, 1640840), (2, 820420), (4, 410210), (5, 328168), (8, 205105), (10, 164084), (17, 96520), (19, 86360), (20, 82042), (34, 48260), (38, 43180), (40, 41021), (68, 24130), (76, 21590), (85, 19304), (95, 17272), (127, 12920), (136, 12065), (152, 10795), (170, 9652), (190, 8636), (254, 6460), (323, 5080), (340, 4826), (380, 4318), (508, 3230), (635, 2584), (646, 2540), (680, 2413), (760, 2159), (1016, 1615), (1270, 1292)]