1663669880

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{557}}^1\times {\mathrm{839}}^1$

素因数の和:1496

約数の個数: 64

約数和(自身を含む): 3796632000

約数和(自身を除く): 2132962120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 557, 712, 839, 890, 1114, 1678, 1780, 2228, 2785, 3356, 3560, 4195, 4456, 5570, 6712, 8390, 11140, 16780, 22280, 33560, 49573, 74671, 99146, 149342, 198292, 247865, 298684, 373355, 396584, 467323, 495730, 597368, 746710, 934646, 991460, 1493420, 1869292, 1982920, 2336615, 2986840, 3738584, 4673230, 9346460, 18692920, 41591747, 83183494, 166366988, 207958735, 332733976, 415917470, 831834940, 1663669880]

約数ペア:

[(1, 1663669880), (2, 831834940), (4, 415917470), (5, 332733976), (8, 207958735), (10, 166366988), (20, 83183494), (40, 41591747), (89, 18692920), (178, 9346460), (356, 4673230), (445, 3738584), (557, 2986840), (712, 2336615), (839, 1982920), (890, 1869292), (1114, 1493420), (1678, 991460), (1780, 934646), (2228, 746710), (2785, 597368), (3356, 495730), (3560, 467323), (4195, 396584), (4456, 373355), (5570, 298684), (6712, 247865), (8390, 198292), (11140, 149342), (16780, 99146), (22280, 74671), (33560, 49573)]