20852960

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^2\times {\mathrm{59}}^1$

素因数の和:168

約数の個数: 72

約数和(自身を含む): 51188760

約数和(自身を除く): 30335800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 59, 80, 94, 118, 160, 188, 235, 236, 295, 376, 470, 472, 590, 752, 940, 944, 1180, 1504, 1880, 1888, 2209, 2360, 2773, 3760, 4418, 4720, 5546, 7520, 8836, 9440, 11045, 11092, 13865, 17672, 22090, 22184, 27730, 35344, 44180, 44368, 55460, 70688, 88360, 88736, 110920, 130331, 176720, 221840, 260662, 353440, 443680, 521324, 651655, 1042648, 1303310, 2085296, 2606620, 4170592, 5213240, 10426480, 20852960]

約数ペア:

[(1, 20852960), (2, 10426480), (4, 5213240), (5, 4170592), (8, 2606620), (10, 2085296), (16, 1303310), (20, 1042648), (32, 651655), (40, 521324), (47, 443680), (59, 353440), (80, 260662), (94, 221840), (118, 176720), (160, 130331), (188, 110920), (235, 88736), (236, 88360), (295, 70688), (376, 55460), (470, 44368), (472, 44180), (590, 35344), (752, 27730), (940, 22184), (944, 22090), (1180, 17672), (1504, 13865), (1880, 11092), (1888, 11045), (2209, 9440), (2360, 8836), (2773, 7520), (3760, 5546), (4418, 4720)]