1390740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1783}}^1$

素因数の和:1808

約数の個数: 48

約数和(自身を含む): 4195968

約数和(自身を除く): 2805228

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 1783, 3566, 5349, 7132, 8915, 10698, 17830, 21396, 23179, 26745, 35660, 46358, 53490, 69537, 92716, 106980, 115895, 139074, 231790, 278148, 347685, 463580, 695370, 1390740]

約数ペア:

[(1, 1390740), (2, 695370), (3, 463580), (4, 347685), (5, 278148), (6, 231790), (10, 139074), (12, 115895), (13, 106980), (15, 92716), (20, 69537), (26, 53490), (30, 46358), (39, 35660), (52, 26745), (60, 23179), (65, 21396), (78, 17830), (130, 10698), (156, 8915), (195, 7132), (260, 5349), (390, 3566), (780, 1783)]