28120722

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{269}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 68428800

約数和(自身を除く): 40308078

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 131, 133, 262, 266, 269, 393, 399, 538, 786, 798, 807, 917, 1614, 1834, 1883, 2489, 2751, 3766, 4978, 5111, 5502, 5649, 7467, 10222, 11298, 14934, 15333, 17423, 30666, 34846, 35239, 35777, 52269, 70478, 71554, 104538, 105717, 107331, 211434, 214662, 246673, 493346, 669541, 740019, 1339082, 1480038, 2008623, 4017246, 4686787, 9373574, 14060361, 28120722]

約数ペア:

[(1, 28120722), (2, 14060361), (3, 9373574), (6, 4686787), (7, 4017246), (14, 2008623), (19, 1480038), (21, 1339082), (38, 740019), (42, 669541), (57, 493346), (114, 246673), (131, 214662), (133, 211434), (262, 107331), (266, 105717), (269, 104538), (393, 71554), (399, 70478), (538, 52269), (786, 35777), (798, 35239), (807, 34846), (917, 30666), (1614, 17423), (1834, 15333), (1883, 14934), (2489, 11298), (2751, 10222), (3766, 7467), (4978, 5649), (5111, 5502)]