21148960

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{821}}^1$

素因数の和:866

約数の個数: 96

約数和(自身を含む): 59657472

約数和(自身を除く): 38508512

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 160, 161, 184, 224, 230, 280, 322, 368, 460, 560, 644, 736, 805, 821, 920, 1120, 1288, 1610, 1642, 1840, 2576, 3220, 3284, 3680, 4105, 5152, 5747, 6440, 6568, 8210, 11494, 12880, 13136, 16420, 18883, 22988, 25760, 26272, 28735, 32840, 37766, 45976, 57470, 65680, 75532, 91952, 94415, 114940, 131360, 132181, 151064, 183904, 188830, 229880, 264362, 302128, 377660, 459760, 528724, 604256, 660905, 755320, 919520, 1057448, 1321810, 1510640, 2114896, 2643620, 3021280, 4229792, 5287240, 10574480, 21148960]

約数ペア:

[(1, 21148960), (2, 10574480), (4, 5287240), (5, 4229792), (7, 3021280), (8, 2643620), (10, 2114896), (14, 1510640), (16, 1321810), (20, 1057448), (23, 919520), (28, 755320), (32, 660905), (35, 604256), (40, 528724), (46, 459760), (56, 377660), (70, 302128), (80, 264362), (92, 229880), (112, 188830), (115, 183904), (140, 151064), (160, 132181), (161, 131360), (184, 114940), (224, 94415), (230, 91952), (280, 75532), (322, 65680), (368, 57470), (460, 45976), (560, 37766), (644, 32840), (736, 28735), (805, 26272), (821, 25760), (920, 22988), (1120, 18883), (1288, 16420), (1610, 13136), (1642, 12880), (1840, 11494), (2576, 8210), (3220, 6568), (3284, 6440), (3680, 5747), (4105, 5152)]