21597680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1093}}^1$

素因数の和:1138

約数の個数: 80

約数和(自身を含む): 56975520

約数和(自身を除く): 35377840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1093, 1235, 1520, 1976, 2186, 2470, 3952, 4372, 4940, 5465, 8744, 9880, 10930, 14209, 17488, 19760, 20767, 21860, 28418, 41534, 43720, 56836, 71045, 83068, 87440, 103835, 113672, 142090, 166136, 207670, 227344, 269971, 284180, 332272, 415340, 539942, 568360, 830680, 1079884, 1136720, 1349855, 1661360, 2159768, 2699710, 4319536, 5399420, 10798840, 21597680]

約数ペア:

[(1, 21597680), (2, 10798840), (4, 5399420), (5, 4319536), (8, 2699710), (10, 2159768), (13, 1661360), (16, 1349855), (19, 1136720), (20, 1079884), (26, 830680), (38, 568360), (40, 539942), (52, 415340), (65, 332272), (76, 284180), (80, 269971), (95, 227344), (104, 207670), (130, 166136), (152, 142090), (190, 113672), (208, 103835), (247, 87440), (260, 83068), (304, 71045), (380, 56836), (494, 43720), (520, 41534), (760, 28418), (988, 21860), (1040, 20767), (1093, 19760), (1235, 17488), (1520, 14209), (1976, 10930), (2186, 9880), (2470, 8744), (3952, 5465), (4372, 4940)]