39520040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:235

約数の個数: 128

約数和(自身を含む): 109209600

約数和(自身を除く): 69689560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 31, 35, 40, 56, 58, 62, 70, 116, 124, 140, 145, 155, 157, 203, 217, 232, 248, 280, 290, 310, 314, 406, 434, 580, 620, 628, 785, 812, 868, 899, 1015, 1085, 1099, 1160, 1240, 1256, 1570, 1624, 1736, 1798, 2030, 2170, 2198, 3140, 3596, 4060, 4340, 4396, 4495, 4553, 4867, 5495, 6280, 6293, 7192, 8120, 8680, 8792, 8990, 9106, 9734, 10990, 12586, 17980, 18212, 19468, 21980, 22765, 24335, 25172, 31465, 31871, 34069, 35960, 36424, 38936, 43960, 45530, 48670, 50344, 62930, 63742, 68138, 91060, 97340, 125860, 127484, 136276, 141143, 159355, 170345, 182120, 194680, 251720, 254968, 272552, 282286, 318710, 340690, 564572, 637420, 681380, 705715, 988001, 1129144, 1274840, 1362760, 1411430, 1976002, 2822860, 3952004, 4940005, 5645720, 7904008, 9880010, 19760020, 39520040]

約数ペア:

[(1, 39520040), (2, 19760020), (4, 9880010), (5, 7904008), (7, 5645720), (8, 4940005), (10, 3952004), (14, 2822860), (20, 1976002), (28, 1411430), (29, 1362760), (31, 1274840), (35, 1129144), (40, 988001), (56, 705715), (58, 681380), (62, 637420), (70, 564572), (116, 340690), (124, 318710), (140, 282286), (145, 272552), (155, 254968), (157, 251720), (203, 194680), (217, 182120), (232, 170345), (248, 159355), (280, 141143), (290, 136276), (310, 127484), (314, 125860), (406, 97340), (434, 91060), (580, 68138), (620, 63742), (628, 62930), (785, 50344), (812, 48670), (868, 45530), (899, 43960), (1015, 38936), (1085, 36424), (1099, 35960), (1160, 34069), (1240, 31871), (1256, 31465), (1570, 25172), (1624, 24335), (1736, 22765), (1798, 21980), (2030, 19468), (2170, 18212), (2198, 17980), (3140, 12586), (3596, 10990), (4060, 9734), (4340, 9106), (4396, 8990), (4495, 8792), (4553, 8680), (4867, 8120), (5495, 7192), (6280, 6293)]