21250170

素因数分解:

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

素因数の和:109

約数の個数: 144

約数和(自身を含む): 63217440

約数和(自身を除く): 41967270

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 19, 30, 34, 38, 43, 45, 51, 57, 85, 86, 90, 95, 102, 114, 129, 153, 170, 171, 190, 215, 255, 258, 285, 289, 306, 323, 342, 387, 430, 510, 570, 578, 645, 646, 731, 765, 774, 817, 855, 867, 969, 1290, 1445, 1462, 1530, 1615, 1634, 1710, 1734, 1935, 1938, 2193, 2451, 2601, 2890, 2907, 3230, 3655, 3870, 4085, 4335, 4386, 4845, 4902, 5202, 5491, 5814, 6579, 7310, 7353, 8170, 8670, 9690, 10965, 10982, 12255, 12427, 13005, 13158, 13889, 14535, 14706, 16473, 21930, 24510, 24854, 26010, 27455, 27778, 29070, 32895, 32946, 36765, 37281, 41667, 49419, 54910, 62135, 65790, 69445, 73530, 74562, 82365, 83334, 98838, 111843, 124270, 125001, 138890, 164730, 186405, 208335, 223686, 236113, 247095, 250002, 372810, 416670, 472226, 494190, 559215, 625005, 708339, 1118430, 1180565, 1250010, 1416678, 2125017, 2361130, 3541695, 4250034, 7083390, 10625085, 21250170]

約数ペア:

[(1, 21250170), (2, 10625085), (3, 7083390), (5, 4250034), (6, 3541695), (9, 2361130), (10, 2125017), (15, 1416678), (17, 1250010), (18, 1180565), (19, 1118430), (30, 708339), (34, 625005), (38, 559215), (43, 494190), (45, 472226), (51, 416670), (57, 372810), (85, 250002), (86, 247095), (90, 236113), (95, 223686), (102, 208335), (114, 186405), (129, 164730), (153, 138890), (170, 125001), (171, 124270), (190, 111843), (215, 98838), (255, 83334), (258, 82365), (285, 74562), (289, 73530), (306, 69445), (323, 65790), (342, 62135), (387, 54910), (430, 49419), (510, 41667), (570, 37281), (578, 36765), (645, 32946), (646, 32895), (731, 29070), (765, 27778), (774, 27455), (817, 26010), (855, 24854), (867, 24510), (969, 21930), (1290, 16473), (1445, 14706), (1462, 14535), (1530, 13889), (1615, 13158), (1634, 13005), (1710, 12427), (1734, 12255), (1935, 10982), (1938, 10965), (2193, 9690), (2451, 8670), (2601, 8170), (2890, 7353), (2907, 7310), (3230, 6579), (3655, 5814), (3870, 5491), (4085, 5202), (4335, 4902), (4386, 4845)]