278798940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{541}}^1$

素因数の和:972

約数の個数: 144

約数和(自身を含む): 970656960

約数和(自身を除く): 691858020

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 409, 420, 541, 630, 818, 1082, 1227, 1260, 1623, 1636, 2045, 2164, 2454, 2705, 2863, 3246, 3681, 3787, 4090, 4869, 4908, 5410, 5726, 6135, 6492, 7362, 7574, 8115, 8180, 8589, 9738, 10820, 11361, 11452, 12270, 14315, 14724, 15148, 16230, 17178, 18405, 18935, 19476, 22722, 24345, 24540, 25767, 28630, 32460, 34083, 34356, 36810, 37870, 42945, 45444, 48690, 51534, 56805, 57260, 68166, 73620, 75740, 85890, 97380, 103068, 113610, 128835, 136332, 170415, 171780, 221269, 227220, 257670, 340830, 442538, 515340, 663807, 681660, 885076, 1106345, 1327614, 1548883, 1991421, 2212690, 2655228, 3097766, 3319035, 3982842, 4425380, 4646649, 6195532, 6638070, 7744415, 7965684, 9293298, 9957105, 13276140, 13939947, 15488830, 18586596, 19914210, 23233245, 27879894, 30977660, 39828420, 46466490, 55759788, 69699735, 92932980, 139399470, 278798940]

約数ペア:

[(1, 278798940), (2, 139399470), (3, 92932980), (4, 69699735), (5, 55759788), (6, 46466490), (7, 39828420), (9, 30977660), (10, 27879894), (12, 23233245), (14, 19914210), (15, 18586596), (18, 15488830), (20, 13939947), (21, 13276140), (28, 9957105), (30, 9293298), (35, 7965684), (36, 7744415), (42, 6638070), (45, 6195532), (60, 4646649), (63, 4425380), (70, 3982842), (84, 3319035), (90, 3097766), (105, 2655228), (126, 2212690), (140, 1991421), (180, 1548883), (210, 1327614), (252, 1106345), (315, 885076), (409, 681660), (420, 663807), (541, 515340), (630, 442538), (818, 340830), (1082, 257670), (1227, 227220), (1260, 221269), (1623, 171780), (1636, 170415), (2045, 136332), (2164, 128835), (2454, 113610), (2705, 103068), (2863, 97380), (3246, 85890), (3681, 75740), (3787, 73620), (4090, 68166), (4869, 57260), (4908, 56805), (5410, 51534), (5726, 48690), (6135, 45444), (6492, 42945), (7362, 37870), (7574, 36810), (8115, 34356), (8180, 34083), (8589, 32460), (9738, 28630), (10820, 25767), (11361, 24540), (11452, 24345), (12270, 22722), (14315, 19476), (14724, 18935), (15148, 18405), (16230, 17178)]