71390720

素因数分解:

$2^9\times 5^1\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:455

約数の個数: 80

約数和(自身を含む): 173828160

約数和(自身を除く): 102437440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 353, 395, 512, 632, 640, 706, 790, 1264, 1280, 1412, 1580, 1765, 2528, 2560, 2824, 3160, 3530, 5056, 5648, 6320, 7060, 10112, 11296, 12640, 14120, 20224, 22592, 25280, 27887, 28240, 40448, 45184, 50560, 55774, 56480, 90368, 101120, 111548, 112960, 139435, 180736, 202240, 223096, 225920, 278870, 446192, 451840, 557740, 892384, 903680, 1115480, 1784768, 2230960, 3569536, 4461920, 7139072, 8923840, 14278144, 17847680, 35695360, 71390720]

約数ペア:

[(1, 71390720), (2, 35695360), (4, 17847680), (5, 14278144), (8, 8923840), (10, 7139072), (16, 4461920), (20, 3569536), (32, 2230960), (40, 1784768), (64, 1115480), (79, 903680), (80, 892384), (128, 557740), (158, 451840), (160, 446192), (256, 278870), (316, 225920), (320, 223096), (353, 202240), (395, 180736), (512, 139435), (632, 112960), (640, 111548), (706, 101120), (790, 90368), (1264, 56480), (1280, 55774), (1412, 50560), (1580, 45184), (1765, 40448), (2528, 28240), (2560, 27887), (2824, 25280), (3160, 22592), (3530, 20224), (5056, 14120), (5648, 12640), (6320, 11296), (7060, 10112)]