20803480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{883}}^1$

素因数の和:944

約数の個数: 64

約数和(自身を含む): 50918400

約数和(自身を除く): 30114920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 124, 152, 155, 190, 248, 310, 380, 589, 620, 760, 883, 1178, 1240, 1766, 2356, 2945, 3532, 4415, 4712, 5890, 7064, 8830, 11780, 16777, 17660, 23560, 27373, 33554, 35320, 54746, 67108, 83885, 109492, 134216, 136865, 167770, 218984, 273730, 335540, 520087, 547460, 671080, 1040174, 1094920, 2080348, 2600435, 4160696, 5200870, 10401740, 20803480]

約数ペア:

[(1, 20803480), (2, 10401740), (4, 5200870), (5, 4160696), (8, 2600435), (10, 2080348), (19, 1094920), (20, 1040174), (31, 671080), (38, 547460), (40, 520087), (62, 335540), (76, 273730), (95, 218984), (124, 167770), (152, 136865), (155, 134216), (190, 109492), (248, 83885), (310, 67108), (380, 54746), (589, 35320), (620, 33554), (760, 27373), (883, 23560), (1178, 17660), (1240, 16777), (1766, 11780), (2356, 8830), (2945, 7064), (3532, 5890), (4415, 4712)]