7890740

素因数分解:

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

素因数の和:153

約数の個数: 96

約数和(自身を含む): 20321280

約数和(自身を除く): 12430540

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 31, 44, 52, 55, 62, 65, 89, 110, 124, 130, 143, 155, 178, 220, 260, 286, 310, 341, 356, 403, 445, 572, 620, 682, 715, 806, 890, 979, 1157, 1364, 1430, 1612, 1705, 1780, 1958, 2015, 2314, 2759, 2860, 3410, 3916, 4030, 4433, 4628, 4895, 5518, 5785, 6820, 8060, 8866, 9790, 11036, 11570, 12727, 13795, 17732, 19580, 22165, 23140, 25454, 27590, 30349, 35867, 44330, 50908, 55180, 60698, 63635, 71734, 88660, 121396, 127270, 143468, 151745, 179335, 254540, 303490, 358670, 394537, 606980, 717340, 789074, 1578148, 1972685, 3945370, 7890740]

約数ペア:

[(1, 7890740), (2, 3945370), (4, 1972685), (5, 1578148), (10, 789074), (11, 717340), (13, 606980), (20, 394537), (22, 358670), (26, 303490), (31, 254540), (44, 179335), (52, 151745), (55, 143468), (62, 127270), (65, 121396), (89, 88660), (110, 71734), (124, 63635), (130, 60698), (143, 55180), (155, 50908), (178, 44330), (220, 35867), (260, 30349), (286, 27590), (310, 25454), (341, 23140), (356, 22165), (403, 19580), (445, 17732), (572, 13795), (620, 12727), (682, 11570), (715, 11036), (806, 9790), (890, 8866), (979, 8060), (1157, 6820), (1364, 5785), (1430, 5518), (1612, 4895), (1705, 4628), (1780, 4433), (1958, 4030), (2015, 3916), (2314, 3410), (2759, 2860)]