81966300

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21017}}^1$

素因数の和:21047

約数の個数: 72

約数和(自身を含む): 255410736

約数和(自身を除く): 173444436

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 21017, 42034, 63051, 84068, 105085, 126102, 210170, 252204, 273221, 315255, 420340, 525425, 546442, 630510, 819663, 1050850, 1092884, 1261020, 1366105, 1576275, 1639326, 2101700, 2732210, 3152550, 3278652, 4098315, 5464420, 6305100, 6830525, 8196630, 13661050, 16393260, 20491575, 27322100, 40983150, 81966300]

約数ペア:

[(1, 81966300), (2, 40983150), (3, 27322100), (4, 20491575), (5, 16393260), (6, 13661050), (10, 8196630), (12, 6830525), (13, 6305100), (15, 5464420), (20, 4098315), (25, 3278652), (26, 3152550), (30, 2732210), (39, 2101700), (50, 1639326), (52, 1576275), (60, 1366105), (65, 1261020), (75, 1092884), (78, 1050850), (100, 819663), (130, 630510), (150, 546442), (156, 525425), (195, 420340), (260, 315255), (300, 273221), (325, 252204), (390, 210170), (650, 126102), (780, 105085), (975, 84068), (1300, 63051), (1950, 42034), (3900, 21017)]