8820940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{167}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 19756800

約数和(自身を除く): 10935860

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 167, 190, 278, 334, 380, 556, 668, 695, 835, 1390, 1670, 2641, 2780, 3173, 3340, 5282, 6346, 10564, 12692, 13205, 15865, 23213, 26410, 31730, 46426, 52820, 63460, 92852, 116065, 232130, 441047, 464260, 882094, 1764188, 2205235, 4410470, 8820940]

約数ペア:

[(1, 8820940), (2, 4410470), (4, 2205235), (5, 1764188), (10, 882094), (19, 464260), (20, 441047), (38, 232130), (76, 116065), (95, 92852), (139, 63460), (167, 52820), (190, 46426), (278, 31730), (334, 26410), (380, 23213), (556, 15865), (668, 13205), (695, 12692), (835, 10564), (1390, 6346), (1670, 5282), (2641, 3340), (2780, 3173)]