29920280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{353}}^1$

素因数の和:540

約数の個数: 64

約数和(自身を含む): 73150560

約数和(自身を除く): 43230280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 163, 260, 326, 353, 520, 652, 706, 815, 1304, 1412, 1630, 1765, 2119, 2824, 3260, 3530, 4238, 4589, 6520, 7060, 8476, 9178, 10595, 14120, 16952, 18356, 21190, 22945, 36712, 42380, 45890, 57539, 84760, 91780, 115078, 183560, 230156, 287695, 460312, 575390, 748007, 1150780, 1496014, 2301560, 2992028, 3740035, 5984056, 7480070, 14960140, 29920280]

約数ペア:

[(1, 29920280), (2, 14960140), (4, 7480070), (5, 5984056), (8, 3740035), (10, 2992028), (13, 2301560), (20, 1496014), (26, 1150780), (40, 748007), (52, 575390), (65, 460312), (104, 287695), (130, 230156), (163, 183560), (260, 115078), (326, 91780), (353, 84760), (520, 57539), (652, 45890), (706, 42380), (815, 36712), (1304, 22945), (1412, 21190), (1630, 18356), (1765, 16952), (2119, 14120), (2824, 10595), (3260, 9178), (3530, 8476), (4238, 7060), (4589, 6520)]