81502590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:706

約数の個数: 128

約数和(自身を含む): 235146240

約数和(自身を除く): 153643650

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 19, 26, 30, 34, 38, 39, 51, 57, 65, 78, 85, 95, 102, 114, 130, 170, 190, 195, 221, 247, 255, 285, 323, 390, 442, 494, 510, 570, 646, 647, 663, 741, 969, 1105, 1235, 1294, 1326, 1482, 1615, 1938, 1941, 2210, 2470, 3230, 3235, 3315, 3705, 3882, 4199, 4845, 6470, 6630, 7410, 8398, 8411, 9690, 9705, 10999, 12293, 12597, 16822, 19410, 20995, 21998, 24586, 25194, 25233, 32997, 36879, 41990, 42055, 50466, 54995, 61465, 62985, 65994, 73758, 84110, 109990, 122930, 125970, 126165, 142987, 159809, 164985, 184395, 208981, 252330, 285974, 319618, 329970, 368790, 417962, 428961, 479427, 626943, 714935, 799045, 857922, 958854, 1044905, 1253886, 1429870, 1598090, 2089810, 2144805, 2397135, 2716753, 3134715, 4289610, 4794270, 5433506, 6269430, 8150259, 13583765, 16300518, 27167530, 40751295, 81502590]

約数ペア:

[(1, 81502590), (2, 40751295), (3, 27167530), (5, 16300518), (6, 13583765), (10, 8150259), (13, 6269430), (15, 5433506), (17, 4794270), (19, 4289610), (26, 3134715), (30, 2716753), (34, 2397135), (38, 2144805), (39, 2089810), (51, 1598090), (57, 1429870), (65, 1253886), (78, 1044905), (85, 958854), (95, 857922), (102, 799045), (114, 714935), (130, 626943), (170, 479427), (190, 428961), (195, 417962), (221, 368790), (247, 329970), (255, 319618), (285, 285974), (323, 252330), (390, 208981), (442, 184395), (494, 164985), (510, 159809), (570, 142987), (646, 126165), (647, 125970), (663, 122930), (741, 109990), (969, 84110), (1105, 73758), (1235, 65994), (1294, 62985), (1326, 61465), (1482, 54995), (1615, 50466), (1938, 42055), (1941, 41990), (2210, 36879), (2470, 32997), (3230, 25233), (3235, 25194), (3315, 24586), (3705, 21998), (3882, 20995), (4199, 19410), (4845, 16822), (6470, 12597), (6630, 12293), (7410, 10999), (8398, 9705), (8411, 9690)]