128970400

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{12401}}^1$

素因数の和:12434

約数の個数: 72

約数和(自身を含む): 339095484

約数和(自身を除く): 210125084

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 80, 100, 104, 130, 160, 200, 208, 260, 325, 400, 416, 520, 650, 800, 1040, 1300, 2080, 2600, 5200, 10400, 12401, 24802, 49604, 62005, 99208, 124010, 161213, 198416, 248020, 310025, 322426, 396832, 496040, 620050, 644852, 806065, 992080, 1240100, 1289704, 1612130, 1984160, 2480200, 2579408, 3224260, 4030325, 4960400, 5158816, 6448520, 8060650, 9920800, 12897040, 16121300, 25794080, 32242600, 64485200, 128970400]

約数ペア:

[(1, 128970400), (2, 64485200), (4, 32242600), (5, 25794080), (8, 16121300), (10, 12897040), (13, 9920800), (16, 8060650), (20, 6448520), (25, 5158816), (26, 4960400), (32, 4030325), (40, 3224260), (50, 2579408), (52, 2480200), (65, 1984160), (80, 1612130), (100, 1289704), (104, 1240100), (130, 992080), (160, 806065), (200, 644852), (208, 620050), (260, 496040), (325, 396832), (400, 322426), (416, 310025), (520, 248020), (650, 198416), (800, 161213), (1040, 124010), (1300, 99208), (2080, 62005), (2600, 49604), (5200, 24802), (10400, 12401)]