20945834

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1$

素因数の和:471

約数の個数: 48

約数和(自身を含む): 40420296

約数和(自身を除く): 19474462

約数列:

[1, 2, 7, 13, 14, 26, 41, 49, 82, 91, 98, 182, 287, 401, 533, 574, 637, 802, 1066, 1274, 2009, 2807, 3731, 4018, 5213, 5614, 7462, 10426, 16441, 19649, 26117, 32882, 36491, 39298, 52234, 72982, 115087, 213733, 230174, 255437, 427466, 510874, 805609, 1496131, 1611218, 2992262, 10472917, 20945834]

約数ペア:

[(1, 20945834), (2, 10472917), (7, 2992262), (13, 1611218), (14, 1496131), (26, 805609), (41, 510874), (49, 427466), (82, 255437), (91, 230174), (98, 213733), (182, 115087), (287, 72982), (401, 52234), (533, 39298), (574, 36491), (637, 32882), (802, 26117), (1066, 19649), (1274, 16441), (2009, 10426), (2807, 7462), (3731, 5614), (4018, 5213)]