290715980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{457}}^1\times {\mathrm{1871}}^1$

素因数の和:2354

約数の個数: 48

約数和(自身を含む): 648176256

約数和(自身を除く): 357460276

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 457, 914, 1828, 1871, 2285, 3742, 4570, 7484, 7769, 9140, 9355, 15538, 18710, 31076, 31807, 37420, 38845, 63614, 77690, 127228, 155380, 159035, 318070, 636140, 855047, 1710094, 3420188, 4275235, 8550470, 14535799, 17100940, 29071598, 58143196, 72678995, 145357990, 290715980]

約数ペア:

[(1, 290715980), (2, 145357990), (4, 72678995), (5, 58143196), (10, 29071598), (17, 17100940), (20, 14535799), (34, 8550470), (68, 4275235), (85, 3420188), (170, 1710094), (340, 855047), (457, 636140), (914, 318070), (1828, 159035), (1871, 155380), (2285, 127228), (3742, 77690), (4570, 63614), (7484, 38845), (7769, 37420), (9140, 31807), (9355, 31076), (15538, 18710)]