21490950

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:238

約数の個数: 96

約数和(自身を含む): 58496256

約数和(自身を除く): 37005306

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 103, 107, 130, 150, 195, 206, 214, 309, 321, 325, 390, 515, 535, 618, 642, 650, 975, 1030, 1070, 1339, 1391, 1545, 1605, 1950, 2575, 2675, 2678, 2782, 3090, 3210, 4017, 4173, 5150, 5350, 6695, 6955, 7725, 8025, 8034, 8346, 11021, 13390, 13910, 15450, 16050, 20085, 20865, 22042, 33063, 33475, 34775, 40170, 41730, 55105, 66126, 66950, 69550, 100425, 104325, 110210, 143273, 165315, 200850, 208650, 275525, 286546, 330630, 429819, 551050, 716365, 826575, 859638, 1432730, 1653150, 2149095, 3581825, 4298190, 7163650, 10745475, 21490950]

約数ペア:

[(1, 21490950), (2, 10745475), (3, 7163650), (5, 4298190), (6, 3581825), (10, 2149095), (13, 1653150), (15, 1432730), (25, 859638), (26, 826575), (30, 716365), (39, 551050), (50, 429819), (65, 330630), (75, 286546), (78, 275525), (103, 208650), (107, 200850), (130, 165315), (150, 143273), (195, 110210), (206, 104325), (214, 100425), (309, 69550), (321, 66950), (325, 66126), (390, 55105), (515, 41730), (535, 40170), (618, 34775), (642, 33475), (650, 33063), (975, 22042), (1030, 20865), (1070, 20085), (1339, 16050), (1391, 15450), (1545, 13910), (1605, 13390), (1950, 11021), (2575, 8346), (2675, 8034), (2678, 8025), (2782, 7725), (3090, 6955), (3210, 6695), (4017, 5350), (4173, 5150)]