919641580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{321553}}^1$

素因数の和:321586

約数の個数: 48

約数和(自身を含む): 2268885024

約数和(自身を除く): 1349243444

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 321553, 643106, 1286212, 1607765, 3215530, 3537083, 4180189, 6431060, 7074166, 8360378, 14148332, 16720756, 17685415, 20900945, 35370830, 41801890, 45982079, 70741660, 83603780, 91964158, 183928316, 229910395, 459820790, 919641580]

約数ペア:

[(1, 919641580), (2, 459820790), (4, 229910395), (5, 183928316), (10, 91964158), (11, 83603780), (13, 70741660), (20, 45982079), (22, 41801890), (26, 35370830), (44, 20900945), (52, 17685415), (55, 16720756), (65, 14148332), (110, 8360378), (130, 7074166), (143, 6431060), (220, 4180189), (260, 3537083), (286, 3215530), (572, 1607765), (715, 1286212), (1430, 643106), (2860, 321553)]