21275748

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^3\times {\mathrm{269}}^1$

素因数の和:318

約数の個数: 72

約数和(自身を含む): 58476600

約数和(自身を除く): 37200852

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 169, 234, 269, 338, 468, 507, 538, 676, 807, 1014, 1076, 1521, 1614, 2028, 2197, 2421, 3042, 3228, 3497, 4394, 4842, 6084, 6591, 6994, 8788, 9684, 10491, 13182, 13988, 19773, 20982, 26364, 31473, 39546, 41964, 45461, 62946, 79092, 90922, 125892, 136383, 181844, 272766, 409149, 545532, 590993, 818298, 1181986, 1636596, 1772979, 2363972, 3545958, 5318937, 7091916, 10637874, 21275748]

約数ペア:

[(1, 21275748), (2, 10637874), (3, 7091916), (4, 5318937), (6, 3545958), (9, 2363972), (12, 1772979), (13, 1636596), (18, 1181986), (26, 818298), (36, 590993), (39, 545532), (52, 409149), (78, 272766), (117, 181844), (156, 136383), (169, 125892), (234, 90922), (269, 79092), (338, 62946), (468, 45461), (507, 41964), (538, 39546), (676, 31473), (807, 26364), (1014, 20982), (1076, 19773), (1521, 13988), (1614, 13182), (2028, 10491), (2197, 9684), (2421, 8788), (3042, 6994), (3228, 6591), (3497, 6084), (4394, 4842)]