390302560

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{128389}}^1$

素因数の和:128423

約数の個数: 48

約数和(自身を含む): 970628400

約数和(自身を除く): 580325840

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 128389, 256778, 513556, 641945, 1027112, 1283890, 2054224, 2439391, 2567780, 4108448, 4878782, 5135560, 9757564, 10271120, 12196955, 19515128, 20542240, 24393910, 39030256, 48787820, 78060512, 97575640, 195151280, 390302560]

約数ペア:

[(1, 390302560), (2, 195151280), (4, 97575640), (5, 78060512), (8, 48787820), (10, 39030256), (16, 24393910), (19, 20542240), (20, 19515128), (32, 12196955), (38, 10271120), (40, 9757564), (76, 5135560), (80, 4878782), (95, 4108448), (152, 2567780), (160, 2439391), (190, 2054224), (304, 1283890), (380, 1027112), (608, 641945), (760, 513556), (1520, 256778), (3040, 128389)]