378648400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{72817}}^1$

素因数の和:72848

約数の個数: 60

約数和(自身を含む): 979693372

約数和(自身を除く): 601044972

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 72817, 145634, 291268, 364085, 582536, 728170, 946621, 1165072, 1456340, 1820425, 1893242, 2912680, 3640850, 3786484, 4733105, 5825360, 7281700, 7572968, 9466210, 14563400, 15145936, 18932420, 23665525, 29126800, 37864840, 47331050, 75729680, 94662100, 189324200, 378648400]

約数ペア:

[(1, 378648400), (2, 189324200), (4, 94662100), (5, 75729680), (8, 47331050), (10, 37864840), (13, 29126800), (16, 23665525), (20, 18932420), (25, 15145936), (26, 14563400), (40, 9466210), (50, 7572968), (52, 7281700), (65, 5825360), (80, 4733105), (100, 3786484), (104, 3640850), (130, 2912680), (200, 1893242), (208, 1820425), (260, 1456340), (325, 1165072), (400, 946621), (520, 728170), (650, 582536), (1040, 364085), (1300, 291268), (2600, 145634), (5200, 72817)]