81606140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2789}}^1$

素因数の和:2835

約数の個数: 96

約数和(自身を含む): 224985600

約数和(自身を除く): 143379460

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 55, 70, 76, 77, 95, 110, 133, 140, 154, 190, 209, 220, 266, 308, 380, 385, 418, 532, 665, 770, 836, 1045, 1330, 1463, 1540, 2090, 2660, 2789, 2926, 4180, 5578, 5852, 7315, 11156, 13945, 14630, 19523, 27890, 29260, 30679, 39046, 52991, 55780, 61358, 78092, 97615, 105982, 122716, 153395, 195230, 211964, 214753, 264955, 306790, 370937, 390460, 429506, 529910, 582901, 613580, 741874, 859012, 1059820, 1073765, 1165802, 1483748, 1854685, 2147530, 2331604, 2914505, 3709370, 4080307, 4295060, 5829010, 7418740, 8160614, 11658020, 16321228, 20401535, 40803070, 81606140]

約数ペア:

[(1, 81606140), (2, 40803070), (4, 20401535), (5, 16321228), (7, 11658020), (10, 8160614), (11, 7418740), (14, 5829010), (19, 4295060), (20, 4080307), (22, 3709370), (28, 2914505), (35, 2331604), (38, 2147530), (44, 1854685), (55, 1483748), (70, 1165802), (76, 1073765), (77, 1059820), (95, 859012), (110, 741874), (133, 613580), (140, 582901), (154, 529910), (190, 429506), (209, 390460), (220, 370937), (266, 306790), (308, 264955), (380, 214753), (385, 211964), (418, 195230), (532, 153395), (665, 122716), (770, 105982), (836, 97615), (1045, 78092), (1330, 61358), (1463, 55780), (1540, 52991), (2090, 39046), (2660, 30679), (2789, 29260), (2926, 27890), (4180, 19523), (5578, 14630), (5852, 13945), (7315, 11156)]