638355720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{1093}}^1$

素因数の和:1295

約数の個数: 128

約数和(自身を含む): 1991255040

約数和(自身を除く): 1352899320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 157, 186, 248, 310, 314, 372, 465, 471, 620, 628, 744, 785, 930, 942, 1093, 1240, 1256, 1570, 1860, 1884, 2186, 2355, 3140, 3279, 3720, 3768, 4372, 4710, 4867, 5465, 6280, 6558, 8744, 9420, 9734, 10930, 13116, 14601, 16395, 18840, 19468, 21860, 24335, 26232, 29202, 32790, 33883, 38936, 43720, 48670, 58404, 65580, 67766, 73005, 97340, 101649, 116808, 131160, 135532, 146010, 169415, 171601, 194680, 203298, 271064, 292020, 338830, 343202, 406596, 508245, 514803, 584040, 677660, 686404, 813192, 858005, 1016490, 1029606, 1355320, 1372808, 1716010, 2032980, 2059212, 2574015, 3432020, 4065960, 4118424, 5148030, 5319631, 6864040, 10296060, 10639262, 15958893, 20592120, 21278524, 26598155, 31917786, 42557048, 53196310, 63835572, 79794465, 106392620, 127671144, 159588930, 212785240, 319177860, 638355720]

約数ペア:

[(1, 638355720), (2, 319177860), (3, 212785240), (4, 159588930), (5, 127671144), (6, 106392620), (8, 79794465), (10, 63835572), (12, 53196310), (15, 42557048), (20, 31917786), (24, 26598155), (30, 21278524), (31, 20592120), (40, 15958893), (60, 10639262), (62, 10296060), (93, 6864040), (120, 5319631), (124, 5148030), (155, 4118424), (157, 4065960), (186, 3432020), (248, 2574015), (310, 2059212), (314, 2032980), (372, 1716010), (465, 1372808), (471, 1355320), (620, 1029606), (628, 1016490), (744, 858005), (785, 813192), (930, 686404), (942, 677660), (1093, 584040), (1240, 514803), (1256, 508245), (1570, 406596), (1860, 343202), (1884, 338830), (2186, 292020), (2355, 271064), (3140, 203298), (3279, 194680), (3720, 171601), (3768, 169415), (4372, 146010), (4710, 135532), (4867, 131160), (5465, 116808), (6280, 101649), (6558, 97340), (8744, 73005), (9420, 67766), (9734, 65580), (10930, 58404), (13116, 48670), (14601, 43720), (16395, 38936), (18840, 33883), (19468, 32790), (21860, 29202), (24335, 26232)]