647540090

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1$

素因数の和:447

約数の個数: 64

約数和(自身を含む): 1233653760

約数和(自身を除く): 586113670

約数列:

[1, 2, 5, 10, 31, 62, 79, 137, 155, 158, 193, 274, 310, 386, 395, 685, 790, 965, 1370, 1930, 2449, 4247, 4898, 5983, 8494, 10823, 11966, 12245, 15247, 21235, 21646, 24490, 26441, 29915, 30494, 42470, 52882, 54115, 59830, 76235, 108230, 132205, 152470, 264410, 335513, 472657, 671026, 819671, 945314, 1639342, 1677565, 2088839, 2363285, 3355130, 4098355, 4177678, 4726570, 8196710, 10444195, 20888390, 64754009, 129508018, 323770045, 647540090]

約数ペア:

[(1, 647540090), (2, 323770045), (5, 129508018), (10, 64754009), (31, 20888390), (62, 10444195), (79, 8196710), (137, 4726570), (155, 4177678), (158, 4098355), (193, 3355130), (274, 2363285), (310, 2088839), (386, 1677565), (395, 1639342), (685, 945314), (790, 819671), (965, 671026), (1370, 472657), (1930, 335513), (2449, 264410), (4247, 152470), (4898, 132205), (5983, 108230), (8494, 76235), (10823, 59830), (11966, 54115), (12245, 52882), (15247, 42470), (21235, 30494), (21646, 29915), (24490, 26441)]