81543840

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{3467}}^1$

素因数の和:3499

約数の個数: 144

約数和(自身を含む): 298886112

約数和(自身を除く): 217342272

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 96, 98, 105, 112, 120, 140, 147, 160, 168, 196, 210, 224, 240, 245, 280, 294, 336, 392, 420, 480, 490, 560, 588, 672, 735, 784, 840, 980, 1120, 1176, 1470, 1568, 1680, 1960, 2352, 2940, 3360, 3467, 3920, 4704, 5880, 6934, 7840, 10401, 11760, 13868, 17335, 20802, 23520, 24269, 27736, 34670, 41604, 48538, 52005, 55472, 69340, 72807, 83208, 97076, 104010, 110944, 121345, 138680, 145614, 166416, 169883, 194152, 208020, 242690, 277360, 291228, 332832, 339766, 364035, 388304, 416040, 485380, 509649, 554720, 582456, 679532, 728070, 776608, 832080, 849415, 970760, 1019298, 1164912, 1359064, 1456140, 1664160, 1698830, 1941520, 2038596, 2329824, 2548245, 2718128, 2912280, 3397660, 3883040, 4077192, 5096490, 5436256, 5824560, 6795320, 8154384, 10192980, 11649120, 13590640, 16308768, 20385960, 27181280, 40771920, 81543840]

約数ペア:

[(1, 81543840), (2, 40771920), (3, 27181280), (4, 20385960), (5, 16308768), (6, 13590640), (7, 11649120), (8, 10192980), (10, 8154384), (12, 6795320), (14, 5824560), (15, 5436256), (16, 5096490), (20, 4077192), (21, 3883040), (24, 3397660), (28, 2912280), (30, 2718128), (32, 2548245), (35, 2329824), (40, 2038596), (42, 1941520), (48, 1698830), (49, 1664160), (56, 1456140), (60, 1359064), (70, 1164912), (80, 1019298), (84, 970760), (96, 849415), (98, 832080), (105, 776608), (112, 728070), (120, 679532), (140, 582456), (147, 554720), (160, 509649), (168, 485380), (196, 416040), (210, 388304), (224, 364035), (240, 339766), (245, 332832), (280, 291228), (294, 277360), (336, 242690), (392, 208020), (420, 194152), (480, 169883), (490, 166416), (560, 145614), (588, 138680), (672, 121345), (735, 110944), (784, 104010), (840, 97076), (980, 83208), (1120, 72807), (1176, 69340), (1470, 55472), (1568, 52005), (1680, 48538), (1960, 41604), (2352, 34670), (2940, 27736), (3360, 24269), (3467, 23520), (3920, 20802), (4704, 17335), (5880, 13868), (6934, 11760), (7840, 10401)]