31205720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8573}}^1$

素因数の和:8604

約数の個数: 64

約数和(自身を含む): 86425920

約数和(自身を除く): 55220200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 8573, 17146, 34292, 42865, 60011, 68584, 85730, 111449, 120022, 171460, 222898, 240044, 300055, 342920, 445796, 480088, 557245, 600110, 780143, 891592, 1114490, 1200220, 1560286, 2228980, 2400440, 3120572, 3900715, 4457960, 6241144, 7801430, 15602860, 31205720]

約数ペア:

[(1, 31205720), (2, 15602860), (4, 7801430), (5, 6241144), (7, 4457960), (8, 3900715), (10, 3120572), (13, 2400440), (14, 2228980), (20, 1560286), (26, 1200220), (28, 1114490), (35, 891592), (40, 780143), (52, 600110), (56, 557245), (65, 480088), (70, 445796), (91, 342920), (104, 300055), (130, 240044), (140, 222898), (182, 171460), (260, 120022), (280, 111449), (364, 85730), (455, 68584), (520, 60011), (728, 42865), (910, 34292), (1820, 17146), (3640, 8573)]