21841300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{317}}^1$

素因数の和:397

約数の個数: 72

約数和(自身を含む): 52168536

約数和(自身を除く): 30327236

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 53, 65, 100, 106, 130, 212, 260, 265, 317, 325, 530, 634, 650, 689, 1060, 1268, 1300, 1325, 1378, 1585, 2650, 2756, 3170, 3445, 4121, 5300, 6340, 6890, 7925, 8242, 13780, 15850, 16484, 16801, 17225, 20605, 31700, 33602, 34450, 41210, 67204, 68900, 82420, 84005, 103025, 168010, 206050, 218413, 336020, 412100, 420025, 436826, 840050, 873652, 1092065, 1680100, 2184130, 4368260, 5460325, 10920650, 21841300]

約数ペア:

[(1, 21841300), (2, 10920650), (4, 5460325), (5, 4368260), (10, 2184130), (13, 1680100), (20, 1092065), (25, 873652), (26, 840050), (50, 436826), (52, 420025), (53, 412100), (65, 336020), (100, 218413), (106, 206050), (130, 168010), (212, 103025), (260, 84005), (265, 82420), (317, 68900), (325, 67204), (530, 41210), (634, 34450), (650, 33602), (689, 31700), (1060, 20605), (1268, 17225), (1300, 16801), (1325, 16484), (1378, 15850), (1585, 13780), (2650, 8242), (2756, 7925), (3170, 6890), (3445, 6340), (4121, 5300)]