20469840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^2$

素因数の和:169

約数の個数: 120

約数和(自身を含む): 67808160

約数和(自身を除く): 47338320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 67, 76, 80, 95, 114, 120, 134, 152, 190, 201, 228, 240, 268, 285, 304, 335, 380, 402, 456, 536, 570, 670, 760, 804, 912, 1005, 1072, 1140, 1273, 1340, 1520, 1608, 2010, 2280, 2546, 2680, 3216, 3819, 4020, 4489, 4560, 5092, 5360, 6365, 7638, 8040, 8978, 10184, 12730, 13467, 15276, 16080, 17956, 19095, 20368, 22445, 25460, 26934, 30552, 35912, 38190, 44890, 50920, 53868, 61104, 67335, 71824, 76380, 85291, 89780, 101840, 107736, 134670, 152760, 170582, 179560, 215472, 255873, 269340, 305520, 341164, 359120, 426455, 511746, 538680, 682328, 852910, 1023492, 1077360, 1279365, 1364656, 1705820, 2046984, 2558730, 3411640, 4093968, 5117460, 6823280, 10234920, 20469840]

約数ペア:

[(1, 20469840), (2, 10234920), (3, 6823280), (4, 5117460), (5, 4093968), (6, 3411640), (8, 2558730), (10, 2046984), (12, 1705820), (15, 1364656), (16, 1279365), (19, 1077360), (20, 1023492), (24, 852910), (30, 682328), (38, 538680), (40, 511746), (48, 426455), (57, 359120), (60, 341164), (67, 305520), (76, 269340), (80, 255873), (95, 215472), (114, 179560), (120, 170582), (134, 152760), (152, 134670), (190, 107736), (201, 101840), (228, 89780), (240, 85291), (268, 76380), (285, 71824), (304, 67335), (335, 61104), (380, 53868), (402, 50920), (456, 44890), (536, 38190), (570, 35912), (670, 30552), (760, 26934), (804, 25460), (912, 22445), (1005, 20368), (1072, 19095), (1140, 17956), (1273, 16080), (1340, 15276), (1520, 13467), (1608, 12730), (2010, 10184), (2280, 8978), (2546, 8040), (2680, 7638), (3216, 6365), (3819, 5360), (4020, 5092), (4489, 4560)]