128037420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{331}}^1$

素因数の和:660

約数の個数: 144

約数和(自身を含む): 446654208

約数和(自身を除く): 318616788

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 307, 315, 331, 420, 614, 630, 662, 921, 993, 1228, 1260, 1324, 1535, 1655, 1842, 1986, 2149, 2317, 2763, 2979, 3070, 3310, 3684, 3972, 4298, 4605, 4634, 4965, 5526, 5958, 6140, 6447, 6620, 6951, 8596, 9210, 9268, 9930, 10745, 11052, 11585, 11916, 12894, 13815, 13902, 14895, 18420, 19341, 19860, 20853, 21490, 23170, 25788, 27630, 27804, 29790, 32235, 34755, 38682, 41706, 42980, 46340, 55260, 59580, 64470, 69510, 77364, 83412, 96705, 101617, 104265, 128940, 139020, 193410, 203234, 208530, 304851, 386820, 406468, 417060, 508085, 609702, 711319, 914553, 1016170, 1219404, 1422638, 1524255, 1829106, 2032340, 2133957, 2845276, 3048510, 3556595, 3658212, 4267914, 4572765, 6097020, 6401871, 7113190, 8535828, 9145530, 10669785, 12803742, 14226380, 18291060, 21339570, 25607484, 32009355, 42679140, 64018710, 128037420]

約数ペア:

[(1, 128037420), (2, 64018710), (3, 42679140), (4, 32009355), (5, 25607484), (6, 21339570), (7, 18291060), (9, 14226380), (10, 12803742), (12, 10669785), (14, 9145530), (15, 8535828), (18, 7113190), (20, 6401871), (21, 6097020), (28, 4572765), (30, 4267914), (35, 3658212), (36, 3556595), (42, 3048510), (45, 2845276), (60, 2133957), (63, 2032340), (70, 1829106), (84, 1524255), (90, 1422638), (105, 1219404), (126, 1016170), (140, 914553), (180, 711319), (210, 609702), (252, 508085), (307, 417060), (315, 406468), (331, 386820), (420, 304851), (614, 208530), (630, 203234), (662, 193410), (921, 139020), (993, 128940), (1228, 104265), (1260, 101617), (1324, 96705), (1535, 83412), (1655, 77364), (1842, 69510), (1986, 64470), (2149, 59580), (2317, 55260), (2763, 46340), (2979, 42980), (3070, 41706), (3310, 38682), (3684, 34755), (3972, 32235), (4298, 29790), (4605, 27804), (4634, 27630), (4965, 25788), (5526, 23170), (5958, 21490), (6140, 20853), (6447, 19860), (6620, 19341), (6951, 18420), (8596, 14895), (9210, 13902), (9268, 13815), (9930, 12894), (10745, 11916), (11052, 11585)]