138775840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:631

約数の個数: 144

約数和(自身を含む): 394377984

約数和(自身を除く): 255602144

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 160, 196, 217, 224, 245, 248, 280, 310, 392, 434, 490, 496, 560, 571, 620, 784, 868, 980, 992, 1085, 1120, 1142, 1240, 1519, 1568, 1736, 1960, 2170, 2284, 2480, 2855, 3038, 3472, 3920, 3997, 4340, 4568, 4960, 5710, 6076, 6944, 7595, 7840, 7994, 8680, 9136, 11420, 12152, 15190, 15988, 17360, 17701, 18272, 19985, 22840, 24304, 27979, 30380, 31976, 34720, 35402, 39970, 45680, 48608, 55958, 60760, 63952, 70804, 79940, 88505, 91360, 111916, 121520, 123907, 127904, 139895, 141608, 159880, 177010, 223832, 243040, 247814, 279790, 283216, 319760, 354020, 447664, 495628, 559580, 566432, 619535, 639520, 708040, 867349, 895328, 991256, 1119160, 1239070, 1416080, 1734698, 1982512, 2238320, 2478140, 2832160, 3469396, 3965024, 4336745, 4476640, 4956280, 6938792, 8673490, 9912560, 13877584, 17346980, 19825120, 27755168, 34693960, 69387920, 138775840]

約数ペア:

[(1, 138775840), (2, 69387920), (4, 34693960), (5, 27755168), (7, 19825120), (8, 17346980), (10, 13877584), (14, 9912560), (16, 8673490), (20, 6938792), (28, 4956280), (31, 4476640), (32, 4336745), (35, 3965024), (40, 3469396), (49, 2832160), (56, 2478140), (62, 2238320), (70, 1982512), (80, 1734698), (98, 1416080), (112, 1239070), (124, 1119160), (140, 991256), (155, 895328), (160, 867349), (196, 708040), (217, 639520), (224, 619535), (245, 566432), (248, 559580), (280, 495628), (310, 447664), (392, 354020), (434, 319760), (490, 283216), (496, 279790), (560, 247814), (571, 243040), (620, 223832), (784, 177010), (868, 159880), (980, 141608), (992, 139895), (1085, 127904), (1120, 123907), (1142, 121520), (1240, 111916), (1519, 91360), (1568, 88505), (1736, 79940), (1960, 70804), (2170, 63952), (2284, 60760), (2480, 55958), (2855, 48608), (3038, 45680), (3472, 39970), (3920, 35402), (3997, 34720), (4340, 31976), (4568, 30380), (4960, 27979), (5710, 24304), (6076, 22840), (6944, 19985), (7595, 18272), (7840, 17701), (7994, 17360), (8680, 15988), (9136, 15190), (11420, 12152)]