19871640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{191}}^1$

素因数の和:242

約数の個数: 144

約数和(自身を含む): 68964480

約数和(自身を除く): 49092840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 30, 34, 36, 40, 45, 51, 60, 68, 72, 85, 90, 102, 120, 136, 153, 170, 180, 191, 204, 255, 289, 306, 340, 360, 382, 408, 510, 573, 578, 612, 680, 764, 765, 867, 955, 1020, 1146, 1156, 1224, 1445, 1528, 1530, 1719, 1734, 1910, 2040, 2292, 2312, 2601, 2865, 2890, 3060, 3247, 3438, 3468, 3820, 4335, 4584, 5202, 5730, 5780, 6120, 6494, 6876, 6936, 7640, 8595, 8670, 9741, 10404, 11460, 11560, 12988, 13005, 13752, 16235, 17190, 17340, 19482, 20808, 22920, 25976, 26010, 29223, 32470, 34380, 34680, 38964, 48705, 52020, 55199, 58446, 64940, 68760, 77928, 97410, 104040, 110398, 116892, 129880, 146115, 165597, 194820, 220796, 233784, 275995, 292230, 331194, 389640, 441592, 496791, 551990, 584460, 662388, 827985, 993582, 1103980, 1168920, 1324776, 1655970, 1987164, 2207960, 2483955, 3311940, 3974328, 4967910, 6623880, 9935820, 19871640]

約数ペア:

[(1, 19871640), (2, 9935820), (3, 6623880), (4, 4967910), (5, 3974328), (6, 3311940), (8, 2483955), (9, 2207960), (10, 1987164), (12, 1655970), (15, 1324776), (17, 1168920), (18, 1103980), (20, 993582), (24, 827985), (30, 662388), (34, 584460), (36, 551990), (40, 496791), (45, 441592), (51, 389640), (60, 331194), (68, 292230), (72, 275995), (85, 233784), (90, 220796), (102, 194820), (120, 165597), (136, 146115), (153, 129880), (170, 116892), (180, 110398), (191, 104040), (204, 97410), (255, 77928), (289, 68760), (306, 64940), (340, 58446), (360, 55199), (382, 52020), (408, 48705), (510, 38964), (573, 34680), (578, 34380), (612, 32470), (680, 29223), (764, 26010), (765, 25976), (867, 22920), (955, 20808), (1020, 19482), (1146, 17340), (1156, 17190), (1224, 16235), (1445, 13752), (1528, 13005), (1530, 12988), (1719, 11560), (1734, 11460), (1910, 10404), (2040, 9741), (2292, 8670), (2312, 8595), (2601, 7640), (2865, 6936), (2890, 6876), (3060, 6494), (3247, 6120), (3438, 5780), (3468, 5730), (3820, 5202), (4335, 4584)]