18438880

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6779}}^1$

素因数の和:6811

約数の個数: 48

約数和(自身を含む): 46131120

約数和(自身を除く): 27692240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 6779, 13558, 27116, 33895, 54232, 67790, 108464, 115243, 135580, 216928, 230486, 271160, 460972, 542320, 576215, 921944, 1084640, 1152430, 1843888, 2304860, 3687776, 4609720, 9219440, 18438880]

約数ペア:

[(1, 18438880), (2, 9219440), (4, 4609720), (5, 3687776), (8, 2304860), (10, 1843888), (16, 1152430), (17, 1084640), (20, 921944), (32, 576215), (34, 542320), (40, 460972), (68, 271160), (80, 230486), (85, 216928), (136, 135580), (160, 115243), (170, 108464), (272, 67790), (340, 54232), (544, 33895), (680, 27116), (1360, 13558), (2720, 6779)]