639301560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{231631}}^1$

素因数の和:231668

約数の個数: 64

約数和(自身を含む): 2001300480

約数和(自身を除く): 1361998920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 184, 230, 276, 345, 460, 552, 690, 920, 1380, 2760, 231631, 463262, 694893, 926524, 1158155, 1389786, 1853048, 2316310, 2779572, 3474465, 4632620, 5327513, 5559144, 6948930, 9265240, 10655026, 13897860, 15982539, 21310052, 26637565, 27795720, 31965078, 42620104, 53275130, 63930156, 79912695, 106550260, 127860312, 159825390, 213100520, 319650780, 639301560]

約数ペア:

[(1, 639301560), (2, 319650780), (3, 213100520), (4, 159825390), (5, 127860312), (6, 106550260), (8, 79912695), (10, 63930156), (12, 53275130), (15, 42620104), (20, 31965078), (23, 27795720), (24, 26637565), (30, 21310052), (40, 15982539), (46, 13897860), (60, 10655026), (69, 9265240), (92, 6948930), (115, 5559144), (120, 5327513), (138, 4632620), (184, 3474465), (230, 2779572), (276, 2316310), (345, 1853048), (460, 1389786), (552, 1158155), (690, 926524), (920, 694893), (1380, 463262), (2760, 231631)]