2500020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:94

約数の個数: 144

約数和(自身を含む): 8648640

約数和(自身を除く): 6148620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 19, 20, 30, 34, 36, 38, 43, 45, 51, 57, 60, 68, 76, 85, 86, 90, 95, 102, 114, 129, 153, 170, 171, 172, 180, 190, 204, 215, 228, 255, 258, 285, 306, 323, 340, 342, 380, 387, 430, 510, 516, 570, 612, 645, 646, 684, 731, 765, 774, 817, 855, 860, 969, 1020, 1140, 1290, 1292, 1462, 1530, 1548, 1615, 1634, 1710, 1935, 1938, 2193, 2451, 2580, 2907, 2924, 3060, 3230, 3268, 3420, 3655, 3870, 3876, 4085, 4386, 4845, 4902, 5814, 6460, 6579, 7310, 7353, 7740, 8170, 8772, 9690, 9804, 10965, 11628, 12255, 13158, 13889, 14535, 14620, 14706, 16340, 19380, 21930, 24510, 26316, 27778, 29070, 29412, 32895, 36765, 41667, 43860, 49020, 55556, 58140, 65790, 69445, 73530, 83334, 125001, 131580, 138890, 147060, 166668, 208335, 250002, 277780, 416670, 500004, 625005, 833340, 1250010, 2500020]

約数ペア:

[(1, 2500020), (2, 1250010), (3, 833340), (4, 625005), (5, 500004), (6, 416670), (9, 277780), (10, 250002), (12, 208335), (15, 166668), (17, 147060), (18, 138890), (19, 131580), (20, 125001), (30, 83334), (34, 73530), (36, 69445), (38, 65790), (43, 58140), (45, 55556), (51, 49020), (57, 43860), (60, 41667), (68, 36765), (76, 32895), (85, 29412), (86, 29070), (90, 27778), (95, 26316), (102, 24510), (114, 21930), (129, 19380), (153, 16340), (170, 14706), (171, 14620), (172, 14535), (180, 13889), (190, 13158), (204, 12255), (215, 11628), (228, 10965), (255, 9804), (258, 9690), (285, 8772), (306, 8170), (323, 7740), (340, 7353), (342, 7310), (380, 6579), (387, 6460), (430, 5814), (510, 4902), (516, 4845), (570, 4386), (612, 4085), (645, 3876), (646, 3870), (684, 3655), (731, 3420), (765, 3268), (774, 3230), (817, 3060), (855, 2924), (860, 2907), (969, 2580), (1020, 2451), (1140, 2193), (1290, 1938), (1292, 1935), (1462, 1710), (1530, 1634), (1548, 1615)]