19653790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 41025600

約数和(自身を除く): 21371810

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 73, 95, 109, 130, 146, 190, 218, 247, 365, 494, 545, 730, 949, 1090, 1235, 1387, 1417, 1898, 2071, 2470, 2774, 2834, 4142, 4745, 6935, 7085, 7957, 9490, 10355, 13870, 14170, 15914, 18031, 20710, 26923, 36062, 39785, 53846, 79570, 90155, 103441, 134615, 151183, 180310, 206882, 269230, 302366, 517205, 755915, 1034410, 1511830, 1965379, 3930758, 9826895, 19653790]

約数ペア:

[(1, 19653790), (2, 9826895), (5, 3930758), (10, 1965379), (13, 1511830), (19, 1034410), (26, 755915), (38, 517205), (65, 302366), (73, 269230), (95, 206882), (109, 180310), (130, 151183), (146, 134615), (190, 103441), (218, 90155), (247, 79570), (365, 53846), (494, 39785), (545, 36062), (730, 26923), (949, 20710), (1090, 18031), (1235, 15914), (1387, 14170), (1417, 13870), (1898, 10355), (2071, 9490), (2470, 7957), (2774, 7085), (2834, 6935), (4142, 4745)]