30779980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:140

約数の個数: 144

約数和(自身を含む): 85800960

約数和(自身を除く): 55020980

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 23, 28, 35, 44, 46, 55, 70, 77, 79, 92, 110, 115, 121, 140, 154, 158, 161, 220, 230, 242, 253, 308, 316, 322, 385, 395, 460, 484, 506, 553, 605, 644, 770, 790, 805, 847, 869, 1012, 1106, 1210, 1265, 1540, 1580, 1610, 1694, 1738, 1771, 1817, 2212, 2420, 2530, 2765, 2783, 3220, 3388, 3476, 3542, 3634, 4235, 4345, 5060, 5530, 5566, 6083, 7084, 7268, 8470, 8690, 8855, 9085, 9559, 11060, 11132, 12166, 12719, 13915, 16940, 17380, 17710, 18170, 19118, 19481, 19987, 24332, 25438, 27830, 30415, 35420, 36340, 38236, 38962, 39974, 47795, 50876, 55660, 60830, 63595, 66913, 77924, 79948, 95590, 97405, 99935, 121660, 127190, 133826, 139909, 191180, 194810, 199870, 219857, 254380, 267652, 279818, 334565, 389620, 399740, 439714, 559636, 669130, 699545, 879428, 1099285, 1338260, 1399090, 1538999, 2198570, 2798180, 3077998, 4397140, 6155996, 7694995, 15389990, 30779980]

約数ペア:

[(1, 30779980), (2, 15389990), (4, 7694995), (5, 6155996), (7, 4397140), (10, 3077998), (11, 2798180), (14, 2198570), (20, 1538999), (22, 1399090), (23, 1338260), (28, 1099285), (35, 879428), (44, 699545), (46, 669130), (55, 559636), (70, 439714), (77, 399740), (79, 389620), (92, 334565), (110, 279818), (115, 267652), (121, 254380), (140, 219857), (154, 199870), (158, 194810), (161, 191180), (220, 139909), (230, 133826), (242, 127190), (253, 121660), (308, 99935), (316, 97405), (322, 95590), (385, 79948), (395, 77924), (460, 66913), (484, 63595), (506, 60830), (553, 55660), (605, 50876), (644, 47795), (770, 39974), (790, 38962), (805, 38236), (847, 36340), (869, 35420), (1012, 30415), (1106, 27830), (1210, 25438), (1265, 24332), (1540, 19987), (1580, 19481), (1610, 19118), (1694, 18170), (1738, 17710), (1771, 17380), (1817, 16940), (2212, 13915), (2420, 12719), (2530, 12166), (2765, 11132), (2783, 11060), (3220, 9559), (3388, 9085), (3476, 8855), (3542, 8690), (3634, 8470), (4235, 7268), (4345, 7084), (5060, 6083), (5530, 5566)]