19726850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:156

約数の個数: 96

約数和(自身を含む): 44997120

約数和(自身を除く): 25270270

約数列:

[1, 2, 5, 10, 11, 13, 22, 25, 26, 31, 50, 55, 62, 65, 89, 110, 130, 143, 155, 178, 275, 286, 310, 325, 341, 403, 445, 550, 650, 682, 715, 775, 806, 890, 979, 1157, 1430, 1550, 1705, 1958, 2015, 2225, 2314, 2759, 3410, 3575, 4030, 4433, 4450, 4895, 5518, 5785, 7150, 8525, 8866, 9790, 10075, 11570, 12727, 13795, 17050, 20150, 22165, 24475, 25454, 27590, 28925, 30349, 35867, 44330, 48950, 57850, 60698, 63635, 68975, 71734, 110825, 127270, 137950, 151745, 179335, 221650, 303490, 318175, 358670, 394537, 636350, 758725, 789074, 896675, 1517450, 1793350, 1972685, 3945370, 9863425, 19726850]

約数ペア:

[(1, 19726850), (2, 9863425), (5, 3945370), (10, 1972685), (11, 1793350), (13, 1517450), (22, 896675), (25, 789074), (26, 758725), (31, 636350), (50, 394537), (55, 358670), (62, 318175), (65, 303490), (89, 221650), (110, 179335), (130, 151745), (143, 137950), (155, 127270), (178, 110825), (275, 71734), (286, 68975), (310, 63635), (325, 60698), (341, 57850), (403, 48950), (445, 44330), (550, 35867), (650, 30349), (682, 28925), (715, 27590), (775, 25454), (806, 24475), (890, 22165), (979, 20150), (1157, 17050), (1430, 13795), (1550, 12727), (1705, 11570), (1958, 10075), (2015, 9790), (2225, 8866), (2314, 8525), (2759, 7150), (3410, 5785), (3575, 5518), (4030, 4895), (4433, 4450)]