18797870

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{227}}^1$

素因数の和:274

約数の個数: 72

約数和(自身を含む): 42808824

約数和(自身を除く): 24010954

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 169, 182, 227, 245, 338, 454, 455, 490, 637, 845, 910, 1135, 1183, 1274, 1589, 1690, 2270, 2366, 2951, 3178, 3185, 5902, 5915, 6370, 7945, 8281, 11123, 11830, 14755, 15890, 16562, 20657, 22246, 29510, 38363, 41314, 41405, 55615, 76726, 82810, 103285, 111230, 144599, 191815, 206570, 268541, 289198, 383630, 537082, 722995, 1342705, 1445990, 1879787, 2685410, 3759574, 9398935, 18797870]

約数ペア:

[(1, 18797870), (2, 9398935), (5, 3759574), (7, 2685410), (10, 1879787), (13, 1445990), (14, 1342705), (26, 722995), (35, 537082), (49, 383630), (65, 289198), (70, 268541), (91, 206570), (98, 191815), (130, 144599), (169, 111230), (182, 103285), (227, 82810), (245, 76726), (338, 55615), (454, 41405), (455, 41314), (490, 38363), (637, 29510), (845, 22246), (910, 20657), (1135, 16562), (1183, 15890), (1274, 14755), (1589, 11830), (1690, 11123), (2270, 8281), (2366, 7945), (2951, 6370), (3178, 5915), (3185, 5902)]