18998980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1$

素因数の和:126

約数の個数: 144

約数和(自身を含む): 54601344

約数和(自身を除く): 35602364

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 52, 55, 65, 70, 73, 77, 91, 110, 130, 140, 143, 146, 154, 169, 182, 220, 260, 286, 292, 308, 338, 364, 365, 385, 455, 511, 572, 676, 715, 730, 770, 803, 845, 910, 949, 1001, 1022, 1183, 1430, 1460, 1540, 1606, 1690, 1820, 1859, 1898, 2002, 2044, 2366, 2555, 2860, 3212, 3380, 3718, 3796, 4004, 4015, 4732, 4745, 5005, 5110, 5621, 5915, 6643, 7436, 8030, 9295, 9490, 10010, 10220, 10439, 11242, 11830, 12337, 13013, 13286, 16060, 18590, 18980, 20020, 20878, 22484, 23660, 24674, 26026, 26572, 28105, 33215, 37180, 41756, 49348, 52052, 52195, 56210, 61685, 65065, 66430, 73073, 86359, 104390, 112420, 123370, 130130, 132860, 135707, 146146, 172718, 208780, 246740, 260260, 271414, 292292, 345436, 365365, 431795, 542828, 678535, 730730, 863590, 949949, 1357070, 1461460, 1727180, 1899898, 2714140, 3799796, 4749745, 9499490, 18998980]

約数ペア:

[(1, 18998980), (2, 9499490), (4, 4749745), (5, 3799796), (7, 2714140), (10, 1899898), (11, 1727180), (13, 1461460), (14, 1357070), (20, 949949), (22, 863590), (26, 730730), (28, 678535), (35, 542828), (44, 431795), (52, 365365), (55, 345436), (65, 292292), (70, 271414), (73, 260260), (77, 246740), (91, 208780), (110, 172718), (130, 146146), (140, 135707), (143, 132860), (146, 130130), (154, 123370), (169, 112420), (182, 104390), (220, 86359), (260, 73073), (286, 66430), (292, 65065), (308, 61685), (338, 56210), (364, 52195), (365, 52052), (385, 49348), (455, 41756), (511, 37180), (572, 33215), (676, 28105), (715, 26572), (730, 26026), (770, 24674), (803, 23660), (845, 22484), (910, 20878), (949, 20020), (1001, 18980), (1022, 18590), (1183, 16060), (1430, 13286), (1460, 13013), (1540, 12337), (1606, 11830), (1690, 11242), (1820, 10439), (1859, 10220), (1898, 10010), (2002, 9490), (2044, 9295), (2366, 8030), (2555, 7436), (2860, 6643), (3212, 5915), (3380, 5621), (3718, 5110), (3796, 5005), (4004, 4745), (4015, 4732)]