25808120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1601}}^1$

素因数の和:1656

約数の個数: 64

約数和(自身を含む): 64592640

約数和(自身を除く): 38784520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1601, 1612, 2015, 3202, 3224, 4030, 6404, 8005, 8060, 12808, 16010, 16120, 20813, 32020, 41626, 49631, 64040, 83252, 99262, 104065, 166504, 198524, 208130, 248155, 397048, 416260, 496310, 645203, 832520, 992620, 1290406, 1985240, 2580812, 3226015, 5161624, 6452030, 12904060, 25808120]

約数ペア:

[(1, 25808120), (2, 12904060), (4, 6452030), (5, 5161624), (8, 3226015), (10, 2580812), (13, 1985240), (20, 1290406), (26, 992620), (31, 832520), (40, 645203), (52, 496310), (62, 416260), (65, 397048), (104, 248155), (124, 208130), (130, 198524), (155, 166504), (248, 104065), (260, 99262), (310, 83252), (403, 64040), (520, 49631), (620, 41626), (806, 32020), (1240, 20813), (1601, 16120), (1612, 16010), (2015, 12808), (3202, 8060), (3224, 8005), (4030, 6404)]