661398512

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{30643}}^1$

素因数の和:30741

約数の個数: 40

約数和(自身を含む): 1367948160

約数和(自身を除く): 706549648

約数列:

[1, 2, 4, 8, 16, 19, 38, 71, 76, 142, 152, 284, 304, 568, 1136, 1349, 2698, 5396, 10792, 21584, 30643, 61286, 122572, 245144, 490288, 582217, 1164434, 2175653, 2328868, 4351306, 4657736, 8702612, 9315472, 17405224, 34810448, 41337407, 82674814, 165349628, 330699256, 661398512]

約数ペア:

[(1, 661398512), (2, 330699256), (4, 165349628), (8, 82674814), (16, 41337407), (19, 34810448), (38, 17405224), (71, 9315472), (76, 8702612), (142, 4657736), (152, 4351306), (284, 2328868), (304, 2175653), (568, 1164434), (1136, 582217), (1349, 490288), (2698, 245144), (5396, 122572), (10792, 61286), (21584, 30643)]