15980900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:693

約数の個数: 72

約数和(自身を含む): 39372480

約数和(自身を除く): 23391580

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 130, 190, 247, 260, 325, 380, 475, 494, 647, 650, 950, 988, 1235, 1294, 1300, 1900, 2470, 2588, 3235, 4940, 6175, 6470, 8411, 12293, 12350, 12940, 16175, 16822, 24586, 24700, 32350, 33644, 42055, 49172, 61465, 64700, 84110, 122930, 159809, 168220, 210275, 245860, 307325, 319618, 420550, 614650, 639236, 799045, 841100, 1229300, 1598090, 3196180, 3995225, 7990450, 15980900]

約数ペア:

[(1, 15980900), (2, 7990450), (4, 3995225), (5, 3196180), (10, 1598090), (13, 1229300), (19, 841100), (20, 799045), (25, 639236), (26, 614650), (38, 420550), (50, 319618), (52, 307325), (65, 245860), (76, 210275), (95, 168220), (100, 159809), (130, 122930), (190, 84110), (247, 64700), (260, 61465), (325, 49172), (380, 42055), (475, 33644), (494, 32350), (647, 24700), (650, 24586), (950, 16822), (988, 16175), (1235, 12940), (1294, 12350), (1300, 12293), (1900, 8411), (2470, 6470), (2588, 6175), (3235, 4940)]