81976180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28663}}^1$

素因数の和:28696

約数の個数: 48

約数和(自身を含む): 202253184

約数和(自身を除く): 120277004

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 28663, 57326, 114652, 143315, 286630, 315293, 372619, 573260, 630586, 745238, 1261172, 1490476, 1576465, 1863095, 3152930, 3726190, 4098809, 6305860, 7452380, 8197618, 16395236, 20494045, 40988090, 81976180]

約数ペア:

[(1, 81976180), (2, 40988090), (4, 20494045), (5, 16395236), (10, 8197618), (11, 7452380), (13, 6305860), (20, 4098809), (22, 3726190), (26, 3152930), (44, 1863095), (52, 1576465), (55, 1490476), (65, 1261172), (110, 745238), (130, 630586), (143, 573260), (220, 372619), (260, 315293), (286, 286630), (572, 143315), (715, 114652), (1430, 57326), (2860, 28663)]