78408180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:306

約数の個数: 144

約数和(自身を含む): 249556944

約数和(自身を除く): 171148764

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 61, 74, 90, 111, 122, 148, 180, 183, 185, 193, 222, 244, 305, 333, 366, 370, 386, 444, 549, 555, 579, 610, 666, 732, 740, 772, 915, 965, 1098, 1110, 1158, 1220, 1332, 1665, 1737, 1830, 1930, 2196, 2220, 2257, 2316, 2745, 2895, 3330, 3474, 3660, 3860, 4514, 5490, 5790, 6660, 6771, 6948, 7141, 8685, 9028, 10980, 11285, 11580, 11773, 13542, 14282, 17370, 20313, 21423, 22570, 23546, 27084, 28564, 33855, 34740, 35319, 35705, 40626, 42846, 45140, 47092, 58865, 64269, 67710, 70638, 71410, 81252, 85692, 101565, 105957, 107115, 117730, 128538, 135420, 141276, 142820, 176595, 203130, 211914, 214230, 235460, 257076, 321345, 353190, 406260, 423828, 428460, 435601, 529785, 642690, 706380, 871202, 1059570, 1285380, 1306803, 1742404, 2119140, 2178005, 2613606, 3920409, 4356010, 5227212, 6534015, 7840818, 8712020, 13068030, 15681636, 19602045, 26136060, 39204090, 78408180]

約数ペア:

[(1, 78408180), (2, 39204090), (3, 26136060), (4, 19602045), (5, 15681636), (6, 13068030), (9, 8712020), (10, 7840818), (12, 6534015), (15, 5227212), (18, 4356010), (20, 3920409), (30, 2613606), (36, 2178005), (37, 2119140), (45, 1742404), (60, 1306803), (61, 1285380), (74, 1059570), (90, 871202), (111, 706380), (122, 642690), (148, 529785), (180, 435601), (183, 428460), (185, 423828), (193, 406260), (222, 353190), (244, 321345), (305, 257076), (333, 235460), (366, 214230), (370, 211914), (386, 203130), (444, 176595), (549, 142820), (555, 141276), (579, 135420), (610, 128538), (666, 117730), (732, 107115), (740, 105957), (772, 101565), (915, 85692), (965, 81252), (1098, 71410), (1110, 70638), (1158, 67710), (1220, 64269), (1332, 58865), (1665, 47092), (1737, 45140), (1830, 42846), (1930, 40626), (2196, 35705), (2220, 35319), (2257, 34740), (2316, 33855), (2745, 28564), (2895, 27084), (3330, 23546), (3474, 22570), (3660, 21423), (3860, 20313), (4514, 17370), (5490, 14282), (5790, 13542), (6660, 11773), (6771, 11580), (6948, 11285), (7141, 10980), (8685, 9028)]