81688740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{673}}^1$

素因数の和:726

約数の個数: 144

約数和(自身を含む): 278097792

約数和(自身を除く): 196409052

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 51, 60, 68, 70, 84, 85, 102, 105, 119, 140, 170, 204, 210, 238, 255, 289, 340, 357, 420, 476, 510, 578, 595, 673, 714, 867, 1020, 1156, 1190, 1346, 1428, 1445, 1734, 1785, 2019, 2023, 2380, 2692, 2890, 3365, 3468, 3570, 4038, 4046, 4335, 4711, 5780, 6069, 6730, 7140, 8076, 8092, 8670, 9422, 10095, 10115, 11441, 12138, 13460, 14133, 17340, 18844, 20190, 20230, 22882, 23555, 24276, 28266, 30345, 34323, 40380, 40460, 45764, 47110, 56532, 57205, 60690, 68646, 70665, 80087, 94220, 114410, 121380, 137292, 141330, 160174, 171615, 194497, 228820, 240261, 282660, 320348, 343230, 388994, 400435, 480522, 583491, 686460, 777988, 800870, 961044, 972485, 1166982, 1201305, 1361479, 1601740, 1944970, 2333964, 2402610, 2722958, 2917455, 3889940, 4084437, 4805220, 5445916, 5834910, 6807395, 8168874, 11669820, 13614790, 16337748, 20422185, 27229580, 40844370, 81688740]

約数ペア:

[(1, 81688740), (2, 40844370), (3, 27229580), (4, 20422185), (5, 16337748), (6, 13614790), (7, 11669820), (10, 8168874), (12, 6807395), (14, 5834910), (15, 5445916), (17, 4805220), (20, 4084437), (21, 3889940), (28, 2917455), (30, 2722958), (34, 2402610), (35, 2333964), (42, 1944970), (51, 1601740), (60, 1361479), (68, 1201305), (70, 1166982), (84, 972485), (85, 961044), (102, 800870), (105, 777988), (119, 686460), (140, 583491), (170, 480522), (204, 400435), (210, 388994), (238, 343230), (255, 320348), (289, 282660), (340, 240261), (357, 228820), (420, 194497), (476, 171615), (510, 160174), (578, 141330), (595, 137292), (673, 121380), (714, 114410), (867, 94220), (1020, 80087), (1156, 70665), (1190, 68646), (1346, 60690), (1428, 57205), (1445, 56532), (1734, 47110), (1785, 45764), (2019, 40460), (2023, 40380), (2380, 34323), (2692, 30345), (2890, 28266), (3365, 24276), (3468, 23555), (3570, 22882), (4038, 20230), (4046, 20190), (4335, 18844), (4711, 17340), (5780, 14133), (6069, 13460), (6730, 12138), (7140, 11441), (8076, 10115), (8092, 10095), (8670, 9422)]