20127080

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{373}}^1$

素因数の和:474

約数の個数: 64

約数和(自身を含む): 48470400

約数和(自身を除く): 28343320

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 71, 76, 95, 142, 152, 190, 284, 355, 373, 380, 568, 710, 746, 760, 1349, 1420, 1492, 1865, 2698, 2840, 2984, 3730, 5396, 6745, 7087, 7460, 10792, 13490, 14174, 14920, 26483, 26980, 28348, 35435, 52966, 53960, 56696, 70870, 105932, 132415, 141740, 211864, 264830, 283480, 503177, 529660, 1006354, 1059320, 2012708, 2515885, 4025416, 5031770, 10063540, 20127080]

約数ペア:

[(1, 20127080), (2, 10063540), (4, 5031770), (5, 4025416), (8, 2515885), (10, 2012708), (19, 1059320), (20, 1006354), (38, 529660), (40, 503177), (71, 283480), (76, 264830), (95, 211864), (142, 141740), (152, 132415), (190, 105932), (284, 70870), (355, 56696), (373, 53960), (380, 52966), (568, 35435), (710, 28348), (746, 26980), (760, 26483), (1349, 14920), (1420, 14174), (1492, 13490), (1865, 10792), (2698, 7460), (2840, 7087), (2984, 6745), (3730, 5396)]