19979700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:186

約数の個数: 144

約数和(自身を含む): 64162560

約数和(自身を除く): 44182860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 47, 50, 52, 60, 65, 75, 78, 94, 100, 109, 130, 141, 150, 156, 188, 195, 218, 235, 260, 282, 300, 325, 327, 390, 436, 470, 545, 564, 611, 650, 654, 705, 780, 940, 975, 1090, 1175, 1222, 1300, 1308, 1410, 1417, 1635, 1833, 1950, 2180, 2350, 2444, 2725, 2820, 2834, 3055, 3270, 3525, 3666, 3900, 4251, 4700, 5123, 5450, 5668, 6110, 6540, 7050, 7085, 7332, 8175, 8502, 9165, 10246, 10900, 12220, 14100, 14170, 15275, 15369, 16350, 17004, 18330, 20492, 21255, 25615, 28340, 30550, 30738, 32700, 35425, 36660, 42510, 45825, 51230, 61100, 61476, 66599, 70850, 76845, 85020, 91650, 102460, 106275, 128075, 133198, 141700, 153690, 183300, 199797, 212550, 256150, 266396, 307380, 332995, 384225, 399594, 425100, 512300, 665990, 768450, 799188, 998985, 1331980, 1536900, 1664975, 1997970, 3329950, 3995940, 4994925, 6659900, 9989850, 19979700]

約数ペア:

[(1, 19979700), (2, 9989850), (3, 6659900), (4, 4994925), (5, 3995940), (6, 3329950), (10, 1997970), (12, 1664975), (13, 1536900), (15, 1331980), (20, 998985), (25, 799188), (26, 768450), (30, 665990), (39, 512300), (47, 425100), (50, 399594), (52, 384225), (60, 332995), (65, 307380), (75, 266396), (78, 256150), (94, 212550), (100, 199797), (109, 183300), (130, 153690), (141, 141700), (150, 133198), (156, 128075), (188, 106275), (195, 102460), (218, 91650), (235, 85020), (260, 76845), (282, 70850), (300, 66599), (325, 61476), (327, 61100), (390, 51230), (436, 45825), (470, 42510), (545, 36660), (564, 35425), (611, 32700), (650, 30738), (654, 30550), (705, 28340), (780, 25615), (940, 21255), (975, 20492), (1090, 18330), (1175, 17004), (1222, 16350), (1300, 15369), (1308, 15275), (1410, 14170), (1417, 14100), (1635, 12220), (1833, 10900), (1950, 10246), (2180, 9165), (2350, 8502), (2444, 8175), (2725, 7332), (2820, 7085), (2834, 7050), (3055, 6540), (3270, 6110), (3525, 5668), (3666, 5450), (3900, 5123), (4251, 4700)]