20105972560

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{352489}}^1$

素因数の和:352556

約数の個数: 80

約数和(自身を含む): 50352491520

約数和(自身を除く): 30246518960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 40, 46, 62, 80, 92, 115, 124, 155, 184, 230, 248, 310, 368, 460, 496, 620, 713, 920, 1240, 1426, 1840, 2480, 2852, 3565, 5704, 7130, 11408, 14260, 28520, 57040, 352489, 704978, 1409956, 1762445, 2819912, 3524890, 5639824, 7049780, 8107247, 10927159, 14099560, 16214494, 21854318, 28199120, 32428988, 40536235, 43708636, 54635795, 64857976, 81072470, 87417272, 109271590, 129715952, 162144940, 174834544, 218543180, 251324657, 324289880, 437086360, 502649314, 648579760, 874172720, 1005298628, 1256623285, 2010597256, 2513246570, 4021194512, 5026493140, 10052986280, 20105972560]

約数ペア:

[(1, 20105972560), (2, 10052986280), (4, 5026493140), (5, 4021194512), (8, 2513246570), (10, 2010597256), (16, 1256623285), (20, 1005298628), (23, 874172720), (31, 648579760), (40, 502649314), (46, 437086360), (62, 324289880), (80, 251324657), (92, 218543180), (115, 174834544), (124, 162144940), (155, 129715952), (184, 109271590), (230, 87417272), (248, 81072470), (310, 64857976), (368, 54635795), (460, 43708636), (496, 40536235), (620, 32428988), (713, 28199120), (920, 21854318), (1240, 16214494), (1426, 14099560), (1840, 10927159), (2480, 8107247), (2852, 7049780), (3565, 5639824), (5704, 3524890), (7130, 2819912), (11408, 1762445), (14260, 1409956), (28520, 704978), (57040, 352489)]