20649390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2131}}^1$

素因数の和:2177

約数の個数: 64

約数和(自身を含む): 55261440

約数和(自身を除く): 34612050

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 19, 30, 34, 38, 51, 57, 85, 95, 102, 114, 170, 190, 255, 285, 323, 510, 570, 646, 969, 1615, 1938, 2131, 3230, 4262, 4845, 6393, 9690, 10655, 12786, 21310, 31965, 36227, 40489, 63930, 72454, 80978, 108681, 121467, 181135, 202445, 217362, 242934, 362270, 404890, 543405, 607335, 688313, 1086810, 1214670, 1376626, 2064939, 3441565, 4129878, 6883130, 10324695, 20649390]

約数ペア:

[(1, 20649390), (2, 10324695), (3, 6883130), (5, 4129878), (6, 3441565), (10, 2064939), (15, 1376626), (17, 1214670), (19, 1086810), (30, 688313), (34, 607335), (38, 543405), (51, 404890), (57, 362270), (85, 242934), (95, 217362), (102, 202445), (114, 181135), (170, 121467), (190, 108681), (255, 80978), (285, 72454), (323, 63930), (510, 40489), (570, 36227), (646, 31965), (969, 21310), (1615, 12786), (1938, 10655), (2131, 9690), (3230, 6393), (4262, 4845)]