81507720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5107}}^1$

素因数の和:5147

約数の個数: 128

約数和(自身を含む): 294220800

約数和(自身を除く): 212713080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 133, 140, 152, 168, 190, 210, 228, 266, 280, 285, 380, 399, 420, 456, 532, 570, 665, 760, 798, 840, 1064, 1140, 1330, 1596, 1995, 2280, 2660, 3192, 3990, 5107, 5320, 7980, 10214, 15321, 15960, 20428, 25535, 30642, 35749, 40856, 51070, 61284, 71498, 76605, 97033, 102140, 107247, 122568, 142996, 153210, 178745, 194066, 204280, 214494, 285992, 291099, 306420, 357490, 388132, 428988, 485165, 536235, 582198, 612840, 679231, 714980, 776264, 857976, 970330, 1072470, 1164396, 1358462, 1429960, 1455495, 1940660, 2037693, 2144940, 2328792, 2716924, 2910990, 3396155, 3881320, 4075386, 4289880, 5433848, 5821980, 6792310, 8150772, 10188465, 11643960, 13584620, 16301544, 20376930, 27169240, 40753860, 81507720]

約数ペア:

[(1, 81507720), (2, 40753860), (3, 27169240), (4, 20376930), (5, 16301544), (6, 13584620), (7, 11643960), (8, 10188465), (10, 8150772), (12, 6792310), (14, 5821980), (15, 5433848), (19, 4289880), (20, 4075386), (21, 3881320), (24, 3396155), (28, 2910990), (30, 2716924), (35, 2328792), (38, 2144940), (40, 2037693), (42, 1940660), (56, 1455495), (57, 1429960), (60, 1358462), (70, 1164396), (76, 1072470), (84, 970330), (95, 857976), (105, 776264), (114, 714980), (120, 679231), (133, 612840), (140, 582198), (152, 536235), (168, 485165), (190, 428988), (210, 388132), (228, 357490), (266, 306420), (280, 291099), (285, 285992), (380, 214494), (399, 204280), (420, 194066), (456, 178745), (532, 153210), (570, 142996), (665, 122568), (760, 107247), (798, 102140), (840, 97033), (1064, 76605), (1140, 71498), (1330, 61284), (1596, 51070), (1995, 40856), (2280, 35749), (2660, 30642), (3192, 25535), (3990, 20428), (5107, 15960), (5320, 15321), (7980, 10214)]