21857520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1493}}^1$

素因数の和:1570

約数の個数: 80

約数和(自身を含む): 68915232

約数和(自身を除く): 47057712

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 61, 80, 120, 122, 183, 240, 244, 305, 366, 488, 610, 732, 915, 976, 1220, 1464, 1493, 1830, 2440, 2928, 2986, 3660, 4479, 4880, 5972, 7320, 7465, 8958, 11944, 14640, 14930, 17916, 22395, 23888, 29860, 35832, 44790, 59720, 71664, 89580, 91073, 119440, 179160, 182146, 273219, 358320, 364292, 455365, 546438, 728584, 910730, 1092876, 1366095, 1457168, 1821460, 2185752, 2732190, 3642920, 4371504, 5464380, 7285840, 10928760, 21857520]

約数ペア:

[(1, 21857520), (2, 10928760), (3, 7285840), (4, 5464380), (5, 4371504), (6, 3642920), (8, 2732190), (10, 2185752), (12, 1821460), (15, 1457168), (16, 1366095), (20, 1092876), (24, 910730), (30, 728584), (40, 546438), (48, 455365), (60, 364292), (61, 358320), (80, 273219), (120, 182146), (122, 179160), (183, 119440), (240, 91073), (244, 89580), (305, 71664), (366, 59720), (488, 44790), (610, 35832), (732, 29860), (915, 23888), (976, 22395), (1220, 17916), (1464, 14930), (1493, 14640), (1830, 11944), (2440, 8958), (2928, 7465), (2986, 7320), (3660, 5972), (4479, 4880)]