21916180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:209

約数の個数: 96

約数和(自身を含む): 55319040

約数和(自身を除く): 33402860

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 79, 97, 110, 130, 143, 158, 194, 220, 260, 286, 316, 388, 395, 485, 572, 715, 790, 869, 970, 1027, 1067, 1261, 1430, 1580, 1738, 1940, 2054, 2134, 2522, 2860, 3476, 4108, 4268, 4345, 5044, 5135, 5335, 6305, 7663, 8690, 10270, 10670, 11297, 12610, 13871, 15326, 17380, 20540, 21340, 22594, 25220, 27742, 30652, 38315, 45188, 55484, 56485, 69355, 76630, 84293, 99619, 112970, 138710, 153260, 168586, 199238, 225940, 277420, 337172, 398476, 421465, 498095, 842930, 996190, 1095809, 1685860, 1992380, 2191618, 4383236, 5479045, 10958090, 21916180]

約数ペア:

[(1, 21916180), (2, 10958090), (4, 5479045), (5, 4383236), (10, 2191618), (11, 1992380), (13, 1685860), (20, 1095809), (22, 996190), (26, 842930), (44, 498095), (52, 421465), (55, 398476), (65, 337172), (79, 277420), (97, 225940), (110, 199238), (130, 168586), (143, 153260), (158, 138710), (194, 112970), (220, 99619), (260, 84293), (286, 76630), (316, 69355), (388, 56485), (395, 55484), (485, 45188), (572, 38315), (715, 30652), (790, 27742), (869, 25220), (970, 22594), (1027, 21340), (1067, 20540), (1261, 17380), (1430, 15326), (1580, 13871), (1738, 12610), (1940, 11297), (2054, 10670), (2134, 10270), (2522, 8690), (2860, 7663), (3476, 6305), (4108, 5335), (4268, 5135), (4345, 5044)]