21159356

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 41658624

約数和(自身を除く): 20499268

約数列:

[1, 2, 4, 17, 23, 34, 46, 68, 83, 92, 163, 166, 326, 332, 391, 652, 782, 1411, 1564, 1909, 2771, 2822, 3749, 3818, 5542, 5644, 7498, 7636, 11084, 13529, 14996, 27058, 32453, 54116, 63733, 64906, 127466, 129812, 229993, 254932, 311167, 459986, 622334, 919972, 1244668, 5289839, 10579678, 21159356]

約数ペア:

[(1, 21159356), (2, 10579678), (4, 5289839), (17, 1244668), (23, 919972), (34, 622334), (46, 459986), (68, 311167), (83, 254932), (92, 229993), (163, 129812), (166, 127466), (326, 64906), (332, 63733), (391, 54116), (652, 32453), (782, 27058), (1411, 14996), (1564, 13529), (1909, 11084), (2771, 7636), (2822, 7498), (3749, 5644), (3818, 5542)]