15990495760

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{44017}}^1$

素因数の和:44288

約数の個数: 80

約数和(自身を含む): 39299270400

約数和(自身を除く): 23308774640

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 239, 304, 380, 478, 760, 956, 1195, 1520, 1912, 2390, 3824, 4541, 4780, 9082, 9560, 18164, 19120, 22705, 36328, 44017, 45410, 72656, 88034, 90820, 176068, 181640, 220085, 352136, 363280, 440170, 704272, 836323, 880340, 1672646, 1760680, 3345292, 3521360, 4181615, 6690584, 8363230, 10520063, 13381168, 16726460, 21040126, 33452920, 42080252, 52600315, 66905840, 84160504, 105200630, 168321008, 199881197, 210401260, 399762394, 420802520, 799524788, 841605040, 999405985, 1599049576, 1998811970, 3198099152, 3997623940, 7995247880, 15990495760]

約数ペア:

[(1, 15990495760), (2, 7995247880), (4, 3997623940), (5, 3198099152), (8, 1998811970), (10, 1599049576), (16, 999405985), (19, 841605040), (20, 799524788), (38, 420802520), (40, 399762394), (76, 210401260), (80, 199881197), (95, 168321008), (152, 105200630), (190, 84160504), (239, 66905840), (304, 52600315), (380, 42080252), (478, 33452920), (760, 21040126), (956, 16726460), (1195, 13381168), (1520, 10520063), (1912, 8363230), (2390, 6690584), (3824, 4181615), (4541, 3521360), (4780, 3345292), (9082, 1760680), (9560, 1672646), (18164, 880340), (19120, 836323), (22705, 704272), (36328, 440170), (44017, 363280), (45410, 352136), (72656, 220085), (88034, 181640), (90820, 176068)]