19981852280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1239569}}^1$

素因数の和:1239624

約数の個数: 64

約数和(自身を含む): 49979462400

約数和(自身を除く): 29997610120

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, 1612, 2015, 3224, 4030, 8060, 16120, 1239569, 2479138, 4958276, 6197845, 9916552, 12395690, 16114397, 24791380, 32228794, 38426639, 49582760, 64457588, 76853278, 80571985, 128915176, 153706556, 161143970, 192133195, 307413112, 322287940, 384266390, 499546307, 644575880, 768532780, 999092614, 1537065560, 1998185228, 2497731535, 3996370456, 4995463070, 9990926140, 19981852280]

約数ペア:

[(1, 19981852280), (2, 9990926140), (4, 4995463070), (5, 3996370456), (8, 2497731535), (10, 1998185228), (13, 1537065560), (20, 999092614), (26, 768532780), (31, 644575880), (40, 499546307), (52, 384266390), (62, 322287940), (65, 307413112), (104, 192133195), (124, 161143970), (130, 153706556), (155, 128915176), (248, 80571985), (260, 76853278), (310, 64457588), (403, 49582760), (520, 38426639), (620, 32228794), (806, 24791380), (1240, 16114397), (1612, 12395690), (2015, 9916552), (3224, 6197845), (4030, 4958276), (8060, 2479138), (16120, 1239569)]