20784720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{7873}}^1$

素因数の和:7900

約数の個数: 80

約数和(自身を含む): 70299072

約数和(自身を除く): 49514352

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 7873, 15746, 23619, 31492, 39365, 47238, 62984, 78730, 86603, 94476, 118095, 125968, 157460, 173206, 188952, 236190, 259809, 314920, 346412, 377904, 433015, 472380, 519618, 629840, 692824, 866030, 944760, 1039236, 1299045, 1385648, 1732060, 1889520, 2078472, 2598090, 3464120, 4156944, 5196180, 6928240, 10392360, 20784720]

約数ペア:

[(1, 20784720), (2, 10392360), (3, 6928240), (4, 5196180), (5, 4156944), (6, 3464120), (8, 2598090), (10, 2078472), (11, 1889520), (12, 1732060), (15, 1385648), (16, 1299045), (20, 1039236), (22, 944760), (24, 866030), (30, 692824), (33, 629840), (40, 519618), (44, 472380), (48, 433015), (55, 377904), (60, 346412), (66, 314920), (80, 259809), (88, 236190), (110, 188952), (120, 173206), (132, 157460), (165, 125968), (176, 118095), (220, 94476), (240, 86603), (264, 78730), (330, 62984), (440, 47238), (528, 39365), (660, 31492), (880, 23619), (1320, 15746), (2640, 7873)]