19935916

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{383}}^1$

素因数の和:431

約数の個数: 72

約数和(自身を含む): 47222784

約数和(自身を除く): 27286868

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 169, 182, 286, 308, 338, 364, 383, 572, 676, 766, 1001, 1183, 1532, 1859, 2002, 2366, 2681, 3718, 4004, 4213, 4732, 4979, 5362, 7436, 8426, 9958, 10724, 13013, 16852, 19916, 26026, 29491, 34853, 52052, 54769, 58982, 64727, 69706, 109538, 117964, 129454, 139412, 219076, 258908, 383383, 453089, 711997, 766766, 906178, 1423994, 1533532, 1812356, 2847988, 4983979, 9967958, 19935916]

約数ペア:

[(1, 19935916), (2, 9967958), (4, 4983979), (7, 2847988), (11, 1812356), (13, 1533532), (14, 1423994), (22, 906178), (26, 766766), (28, 711997), (44, 453089), (52, 383383), (77, 258908), (91, 219076), (143, 139412), (154, 129454), (169, 117964), (182, 109538), (286, 69706), (308, 64727), (338, 58982), (364, 54769), (383, 52052), (572, 34853), (676, 29491), (766, 26026), (1001, 19916), (1183, 16852), (1532, 13013), (1859, 10724), (2002, 9958), (2366, 8426), (2681, 7436), (3718, 5362), (4004, 4979), (4213, 4732)]