138320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:52

約数の個数: 80

約数和(自身を含む): 416640

約数和(自身を除く): 278320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 19, 20, 26, 28, 35, 38, 40, 52, 56, 65, 70, 76, 80, 91, 95, 104, 112, 130, 133, 140, 152, 182, 190, 208, 247, 260, 266, 280, 304, 364, 380, 455, 494, 520, 532, 560, 665, 728, 760, 910, 988, 1040, 1064, 1235, 1330, 1456, 1520, 1729, 1820, 1976, 2128, 2470, 2660, 3458, 3640, 3952, 4940, 5320, 6916, 7280, 8645, 9880, 10640, 13832, 17290, 19760, 27664, 34580, 69160, 138320]

約数ペア:

[(1, 138320), (2, 69160), (4, 34580), (5, 27664), (7, 19760), (8, 17290), (10, 13832), (13, 10640), (14, 9880), (16, 8645), (19, 7280), (20, 6916), (26, 5320), (28, 4940), (35, 3952), (38, 3640), (40, 3458), (52, 2660), (56, 2470), (65, 2128), (70, 1976), (76, 1820), (80, 1729), (91, 1520), (95, 1456), (104, 1330), (112, 1235), (130, 1064), (133, 1040), (140, 988), (152, 910), (182, 760), (190, 728), (208, 665), (247, 560), (260, 532), (266, 520), (280, 494), (304, 455), (364, 380)]