198421120

素因数分解:

$2^7\times 5^1\times {\mathrm{389}}^1\times {\mathrm{797}}^1$

素因数の和:1205

約数の個数: 64

約数和(自身を含む): 476166600

約数和(自身を除く): 277745480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 389, 640, 778, 797, 1556, 1594, 1945, 3112, 3188, 3890, 3985, 6224, 6376, 7780, 7970, 12448, 12752, 15560, 15940, 24896, 25504, 31120, 31880, 49792, 51008, 62240, 63760, 102016, 124480, 127520, 248960, 255040, 310033, 510080, 620066, 1240132, 1550165, 2480264, 3100330, 4960528, 6200660, 9921056, 12401320, 19842112, 24802640, 39684224, 49605280, 99210560, 198421120]

約数ペア:

[(1, 198421120), (2, 99210560), (4, 49605280), (5, 39684224), (8, 24802640), (10, 19842112), (16, 12401320), (20, 9921056), (32, 6200660), (40, 4960528), (64, 3100330), (80, 2480264), (128, 1550165), (160, 1240132), (320, 620066), (389, 510080), (640, 310033), (778, 255040), (797, 248960), (1556, 127520), (1594, 124480), (1945, 102016), (3112, 63760), (3188, 62240), (3890, 51008), (3985, 49792), (6224, 31880), (6376, 31120), (7780, 25504), (7970, 24896), (12448, 15940), (12752, 15560)]