28348040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{739}}^1$

素因数の和:894

約数の個数: 64

約数和(自身を含む): 73526400

約数和(自身を除く): 45178360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 137, 140, 274, 280, 548, 685, 739, 959, 1096, 1370, 1478, 1918, 2740, 2956, 3695, 3836, 4795, 5173, 5480, 5912, 7390, 7672, 9590, 10346, 14780, 19180, 20692, 25865, 29560, 38360, 41384, 51730, 101243, 103460, 202486, 206920, 404972, 506215, 708701, 809944, 1012430, 1417402, 2024860, 2834804, 3543505, 4049720, 5669608, 7087010, 14174020, 28348040]

約数ペア:

[(1, 28348040), (2, 14174020), (4, 7087010), (5, 5669608), (7, 4049720), (8, 3543505), (10, 2834804), (14, 2024860), (20, 1417402), (28, 1012430), (35, 809944), (40, 708701), (56, 506215), (70, 404972), (137, 206920), (140, 202486), (274, 103460), (280, 101243), (548, 51730), (685, 41384), (739, 38360), (959, 29560), (1096, 25865), (1370, 20692), (1478, 19180), (1918, 14780), (2740, 10346), (2956, 9590), (3695, 7672), (3836, 7390), (4795, 5912), (5173, 5480)]