28743351

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^3\times {\mathrm{89}}^1$

素因数の和:145

約数の個数: 48

約数和(自身を含む): 48837600

約数和(自身を除く): 20094249

約数列:

[1, 3, 7, 13, 21, 39, 49, 89, 91, 147, 169, 267, 273, 507, 623, 637, 1157, 1183, 1869, 1911, 2197, 3471, 3549, 4361, 6591, 8099, 8281, 13083, 15041, 15379, 24297, 24843, 45123, 46137, 56693, 105287, 107653, 170079, 195533, 315861, 322959, 586599, 737009, 1368731, 2211027, 4106193, 9581117, 28743351]

約数ペア:

[(1, 28743351), (3, 9581117), (7, 4106193), (13, 2211027), (21, 1368731), (39, 737009), (49, 586599), (89, 322959), (91, 315861), (147, 195533), (169, 170079), (267, 107653), (273, 105287), (507, 56693), (623, 46137), (637, 45123), (1157, 24843), (1183, 24297), (1869, 15379), (1911, 15041), (2197, 13083), (3471, 8281), (3549, 8099), (4361, 6591)]