19880100

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:259

約数の個数: 144

約数和(自身を含む): 65968000

約数和(自身を除く): 46087900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 37, 45, 50, 54, 60, 74, 75, 90, 100, 108, 111, 135, 148, 150, 180, 185, 199, 222, 225, 270, 300, 333, 370, 398, 444, 450, 540, 555, 597, 666, 675, 740, 796, 900, 925, 995, 999, 1110, 1194, 1332, 1350, 1665, 1791, 1850, 1990, 1998, 2220, 2388, 2700, 2775, 2985, 3330, 3582, 3700, 3980, 3996, 4975, 4995, 5373, 5550, 5970, 6660, 7164, 7363, 8325, 8955, 9950, 9990, 10746, 11100, 11940, 14726, 14925, 16650, 17910, 19900, 19980, 21492, 22089, 24975, 26865, 29452, 29850, 33300, 35820, 36815, 44178, 44775, 49950, 53730, 59700, 66267, 73630, 88356, 89550, 99900, 107460, 110445, 132534, 134325, 147260, 179100, 184075, 198801, 220890, 265068, 268650, 331335, 368150, 397602, 441780, 537300, 552225, 662670, 736300, 795204, 994005, 1104450, 1325340, 1656675, 1988010, 2208900, 3313350, 3976020, 4970025, 6626700, 9940050, 19880100]

約数ペア:

[(1, 19880100), (2, 9940050), (3, 6626700), (4, 4970025), (5, 3976020), (6, 3313350), (9, 2208900), (10, 1988010), (12, 1656675), (15, 1325340), (18, 1104450), (20, 994005), (25, 795204), (27, 736300), (30, 662670), (36, 552225), (37, 537300), (45, 441780), (50, 397602), (54, 368150), (60, 331335), (74, 268650), (75, 265068), (90, 220890), (100, 198801), (108, 184075), (111, 179100), (135, 147260), (148, 134325), (150, 132534), (180, 110445), (185, 107460), (199, 99900), (222, 89550), (225, 88356), (270, 73630), (300, 66267), (333, 59700), (370, 53730), (398, 49950), (444, 44775), (450, 44178), (540, 36815), (555, 35820), (597, 33300), (666, 29850), (675, 29452), (740, 26865), (796, 24975), (900, 22089), (925, 21492), (995, 19980), (999, 19900), (1110, 17910), (1194, 16650), (1332, 14925), (1350, 14726), (1665, 11940), (1791, 11100), (1850, 10746), (1990, 9990), (1998, 9950), (2220, 8955), (2388, 8325), (2700, 7363), (2775, 7164), (2985, 6660), (3330, 5970), (3582, 5550), (3700, 5373), (3980, 4995), (3996, 4975)]