19784178920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1450453}}^1$

素因数の和:1450506

約数の個数: 64

約数和(自身を含む): 50127690240

約数和(自身を除く): 30343511320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1705, 2728, 3410, 6820, 13640, 1450453, 2900906, 5801812, 7252265, 11603624, 14504530, 15954983, 29009060, 31909966, 44964043, 58018120, 63819932, 79774915, 89928086, 127639864, 159549830, 179856172, 224820215, 319099660, 359712344, 449640430, 494604473, 638199320, 899280860, 989208946, 1798561720, 1978417892, 2473022365, 3956835784, 4946044730, 9892089460, 19784178920]

約数ペア:

[(1, 19784178920), (2, 9892089460), (4, 4946044730), (5, 3956835784), (8, 2473022365), (10, 1978417892), (11, 1798561720), (20, 989208946), (22, 899280860), (31, 638199320), (40, 494604473), (44, 449640430), (55, 359712344), (62, 319099660), (88, 224820215), (110, 179856172), (124, 159549830), (155, 127639864), (220, 89928086), (248, 79774915), (310, 63819932), (341, 58018120), (440, 44964043), (620, 31909966), (682, 29009060), (1240, 15954983), (1364, 14504530), (1705, 11603624), (2728, 7252265), (3410, 5801812), (6820, 2900906), (13640, 1450453)]