81656120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{22433}}^1$

素因数の和:22464

約数の個数: 64

約数和(自身を含む): 226134720

約数和(自身を除く): 144478600

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 22433, 44866, 89732, 112165, 157031, 179464, 224330, 291629, 314062, 448660, 583258, 628124, 785155, 897320, 1166516, 1256248, 1458145, 1570310, 2041403, 2333032, 2916290, 3140620, 4082806, 5832580, 6281240, 8165612, 10207015, 11665160, 16331224, 20414030, 40828060, 81656120]

約数ペア:

[(1, 81656120), (2, 40828060), (4, 20414030), (5, 16331224), (7, 11665160), (8, 10207015), (10, 8165612), (13, 6281240), (14, 5832580), (20, 4082806), (26, 3140620), (28, 2916290), (35, 2333032), (40, 2041403), (52, 1570310), (56, 1458145), (65, 1256248), (70, 1166516), (91, 897320), (104, 785155), (130, 628124), (140, 583258), (182, 448660), (260, 314062), (280, 291629), (364, 224330), (455, 179464), (520, 157031), (728, 112165), (910, 89732), (1820, 44866), (3640, 22433)]