20107520

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{683}}^1$

素因数の和:727

約数の個数: 72

約数和(自身を含む): 50331456

約数和(自身を除く): 30223936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 256, 320, 368, 460, 640, 683, 736, 920, 1280, 1366, 1472, 1840, 2732, 2944, 3415, 3680, 5464, 5888, 6830, 7360, 10928, 13660, 14720, 15709, 21856, 27320, 29440, 31418, 43712, 54640, 62836, 78545, 87424, 109280, 125672, 157090, 174848, 218560, 251344, 314180, 437120, 502688, 628360, 874240, 1005376, 1256720, 2010752, 2513440, 4021504, 5026880, 10053760, 20107520]

約数ペア:

[(1, 20107520), (2, 10053760), (4, 5026880), (5, 4021504), (8, 2513440), (10, 2010752), (16, 1256720), (20, 1005376), (23, 874240), (32, 628360), (40, 502688), (46, 437120), (64, 314180), (80, 251344), (92, 218560), (115, 174848), (128, 157090), (160, 125672), (184, 109280), (230, 87424), (256, 78545), (320, 62836), (368, 54640), (460, 43712), (640, 31418), (683, 29440), (736, 27320), (920, 21856), (1280, 15709), (1366, 14720), (1472, 13660), (1840, 10928), (2732, 7360), (2944, 6830), (3415, 5888), (3680, 5464)]