20638560

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:141

約数の個数: 192

約数和(自身を含む): 71608320

約数和(自身を除く): 50969760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 31, 32, 38, 40, 48, 57, 60, 62, 73, 76, 80, 93, 95, 96, 114, 120, 124, 146, 152, 155, 160, 186, 190, 219, 228, 240, 248, 285, 292, 304, 310, 365, 372, 380, 438, 456, 465, 480, 496, 570, 584, 589, 608, 620, 730, 744, 760, 876, 912, 930, 992, 1095, 1140, 1168, 1178, 1240, 1387, 1460, 1488, 1520, 1752, 1767, 1824, 1860, 2190, 2263, 2280, 2336, 2356, 2480, 2774, 2920, 2945, 2976, 3040, 3504, 3534, 3720, 4161, 4380, 4526, 4560, 4712, 4960, 5548, 5840, 5890, 6789, 6935, 7008, 7068, 7440, 8322, 8760, 8835, 9052, 9120, 9424, 11096, 11315, 11680, 11780, 13578, 13870, 14136, 14880, 16644, 17520, 17670, 18104, 18848, 20805, 22192, 22630, 23560, 27156, 27740, 28272, 33288, 33945, 35040, 35340, 36208, 41610, 42997, 44384, 45260, 47120, 54312, 55480, 56544, 66576, 67890, 70680, 72416, 83220, 85994, 90520, 94240, 108624, 110960, 128991, 133152, 135780, 141360, 166440, 171988, 181040, 214985, 217248, 221920, 257982, 271560, 282720, 332880, 343976, 362080, 429970, 515964, 543120, 644955, 665760, 687952, 859940, 1031928, 1086240, 1289910, 1375904, 1719880, 2063856, 2579820, 3439760, 4127712, 5159640, 6879520, 10319280, 20638560]

約数ペア:

[(1, 20638560), (2, 10319280), (3, 6879520), (4, 5159640), (5, 4127712), (6, 3439760), (8, 2579820), (10, 2063856), (12, 1719880), (15, 1375904), (16, 1289910), (19, 1086240), (20, 1031928), (24, 859940), (30, 687952), (31, 665760), (32, 644955), (38, 543120), (40, 515964), (48, 429970), (57, 362080), (60, 343976), (62, 332880), (73, 282720), (76, 271560), (80, 257982), (93, 221920), (95, 217248), (96, 214985), (114, 181040), (120, 171988), (124, 166440), (146, 141360), (152, 135780), (155, 133152), (160, 128991), (186, 110960), (190, 108624), (219, 94240), (228, 90520), (240, 85994), (248, 83220), (285, 72416), (292, 70680), (304, 67890), (310, 66576), (365, 56544), (372, 55480), (380, 54312), (438, 47120), (456, 45260), (465, 44384), (480, 42997), (496, 41610), (570, 36208), (584, 35340), (589, 35040), (608, 33945), (620, 33288), (730, 28272), (744, 27740), (760, 27156), (876, 23560), (912, 22630), (930, 22192), (992, 20805), (1095, 18848), (1140, 18104), (1168, 17670), (1178, 17520), (1240, 16644), (1387, 14880), (1460, 14136), (1488, 13870), (1520, 13578), (1752, 11780), (1767, 11680), (1824, 11315), (1860, 11096), (2190, 9424), (2263, 9120), (2280, 9052), (2336, 8835), (2356, 8760), (2480, 8322), (2774, 7440), (2920, 7068), (2945, 7008), (2976, 6935), (3040, 6789), (3504, 5890), (3534, 5840), (3720, 5548), (4161, 4960), (4380, 4712), (4526, 4560)]