205720240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{1489}}^1$

素因数の和:1670

約数の個数: 80

約数和(自身を含む): 525457440

約数和(自身を除く): 319737200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 157, 176, 220, 314, 440, 628, 785, 880, 1256, 1489, 1570, 1727, 2512, 2978, 3140, 3454, 5956, 6280, 6908, 7445, 8635, 11912, 12560, 13816, 14890, 16379, 17270, 23824, 27632, 29780, 32758, 34540, 59560, 65516, 69080, 81895, 119120, 131032, 138160, 163790, 233773, 262064, 327580, 467546, 655160, 935092, 1168865, 1310320, 1870184, 2337730, 2571503, 3740368, 4675460, 5143006, 9350920, 10286012, 12857515, 18701840, 20572024, 25715030, 41144048, 51430060, 102860120, 205720240]

約数ペア:

[(1, 205720240), (2, 102860120), (4, 51430060), (5, 41144048), (8, 25715030), (10, 20572024), (11, 18701840), (16, 12857515), (20, 10286012), (22, 9350920), (40, 5143006), (44, 4675460), (55, 3740368), (80, 2571503), (88, 2337730), (110, 1870184), (157, 1310320), (176, 1168865), (220, 935092), (314, 655160), (440, 467546), (628, 327580), (785, 262064), (880, 233773), (1256, 163790), (1489, 138160), (1570, 131032), (1727, 119120), (2512, 81895), (2978, 69080), (3140, 65516), (3454, 59560), (5956, 34540), (6280, 32758), (6908, 29780), (7445, 27632), (8635, 23824), (11912, 17270), (12560, 16379), (13816, 14890)]