20004216520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1823}}^1\times {\mathrm{6691}}^1$

素因数の和:8566

約数の個数: 64

約数和(自身を含む): 46139466240

約数和(自身を除く): 26135249720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 1823, 3646, 6691, 7292, 9115, 13382, 14584, 18230, 26764, 33455, 36460, 53528, 66910, 72920, 74743, 133820, 149486, 267640, 274331, 298972, 373715, 548662, 597944, 747430, 1097324, 1371655, 1494860, 2194648, 2743310, 2989720, 5486620, 10973240, 12197693, 24395386, 48790772, 60988465, 97581544, 121976930, 243953860, 487907720, 500105413, 1000210826, 2000421652, 2500527065, 4000843304, 5001054130, 10002108260, 20004216520]

約数ペア:

[(1, 20004216520), (2, 10002108260), (4, 5001054130), (5, 4000843304), (8, 2500527065), (10, 2000421652), (20, 1000210826), (40, 500105413), (41, 487907720), (82, 243953860), (164, 121976930), (205, 97581544), (328, 60988465), (410, 48790772), (820, 24395386), (1640, 12197693), (1823, 10973240), (3646, 5486620), (6691, 2989720), (7292, 2743310), (9115, 2194648), (13382, 1494860), (14584, 1371655), (18230, 1097324), (26764, 747430), (33455, 597944), (36460, 548662), (53528, 373715), (66910, 298972), (72920, 274331), (74743, 267640), (133820, 149486)]