18423040

素因数分解:

$2^8\times 5^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:447

約数の個数: 72

約数和(自身を含む): 45438120

約数和(自身を除く): 27015080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 256, 296, 320, 370, 389, 592, 640, 740, 778, 1184, 1280, 1480, 1556, 1945, 2368, 2960, 3112, 3890, 4736, 5920, 6224, 7780, 9472, 11840, 12448, 14393, 15560, 23680, 24896, 28786, 31120, 47360, 49792, 57572, 62240, 71965, 99584, 115144, 124480, 143930, 230288, 248960, 287860, 460576, 497920, 575720, 921152, 1151440, 1842304, 2302880, 3684608, 4605760, 9211520, 18423040]

約数ペア:

[(1, 18423040), (2, 9211520), (4, 4605760), (5, 3684608), (8, 2302880), (10, 1842304), (16, 1151440), (20, 921152), (32, 575720), (37, 497920), (40, 460576), (64, 287860), (74, 248960), (80, 230288), (128, 143930), (148, 124480), (160, 115144), (185, 99584), (256, 71965), (296, 62240), (320, 57572), (370, 49792), (389, 47360), (592, 31120), (640, 28786), (740, 24896), (778, 23680), (1184, 15560), (1280, 14393), (1480, 12448), (1556, 11840), (1945, 9472), (2368, 7780), (2960, 6224), (3112, 5920), (3890, 4736)]