20218505188

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{541}}^1\times {\mathrm{70249}}^1$

素因数の和:70820

約数の個数: 48

約数和(自身を含む): 42644560000

約数和(自身を除く): 22426054812

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 541, 1082, 2164, 3787, 7574, 10279, 15148, 20558, 41116, 70249, 71953, 140498, 143906, 280996, 287812, 491743, 983486, 1334731, 1966972, 2669462, 5338924, 9343117, 18686234, 37372468, 38004709, 76009418, 152018836, 266032963, 532065926, 722089471, 1064131852, 1444178942, 2888357884, 5054626297, 10109252594, 20218505188]

約数ペア:

[(1, 20218505188), (2, 10109252594), (4, 5054626297), (7, 2888357884), (14, 1444178942), (19, 1064131852), (28, 722089471), (38, 532065926), (76, 266032963), (133, 152018836), (266, 76009418), (532, 38004709), (541, 37372468), (1082, 18686234), (2164, 9343117), (3787, 5338924), (7574, 2669462), (10279, 1966972), (15148, 1334731), (20558, 983486), (41116, 491743), (70249, 287812), (71953, 280996), (140498, 143906)]