81864510

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{191}}^1$

素因数の和:378

約数の個数: 128

約数和(自身を含む): 244629504

約数和(自身を除く): 162764994

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 91, 105, 130, 157, 182, 191, 195, 210, 273, 314, 382, 390, 455, 471, 546, 573, 785, 910, 942, 955, 1099, 1146, 1337, 1365, 1570, 1910, 2041, 2198, 2355, 2483, 2674, 2730, 2865, 3297, 4011, 4082, 4710, 4966, 5495, 5730, 6123, 6594, 6685, 7449, 8022, 10205, 10990, 12246, 12415, 13370, 14287, 14898, 16485, 17381, 20055, 20410, 24830, 28574, 29987, 30615, 32970, 34762, 37245, 40110, 42861, 52143, 59974, 61230, 71435, 74490, 85722, 86905, 89961, 104286, 142870, 149935, 173810, 179922, 209909, 214305, 260715, 299870, 389831, 419818, 428610, 449805, 521430, 629727, 779662, 899610, 1049545, 1169493, 1259454, 1949155, 2099090, 2338986, 2728817, 3148635, 3898310, 5457634, 5847465, 6297270, 8186451, 11694930, 13644085, 16372902, 27288170, 40932255, 81864510]

約数ペア:

[(1, 81864510), (2, 40932255), (3, 27288170), (5, 16372902), (6, 13644085), (7, 11694930), (10, 8186451), (13, 6297270), (14, 5847465), (15, 5457634), (21, 3898310), (26, 3148635), (30, 2728817), (35, 2338986), (39, 2099090), (42, 1949155), (65, 1259454), (70, 1169493), (78, 1049545), (91, 899610), (105, 779662), (130, 629727), (157, 521430), (182, 449805), (191, 428610), (195, 419818), (210, 389831), (273, 299870), (314, 260715), (382, 214305), (390, 209909), (455, 179922), (471, 173810), (546, 149935), (573, 142870), (785, 104286), (910, 89961), (942, 86905), (955, 85722), (1099, 74490), (1146, 71435), (1337, 61230), (1365, 59974), (1570, 52143), (1910, 42861), (2041, 40110), (2198, 37245), (2355, 34762), (2483, 32970), (2674, 30615), (2730, 29987), (2865, 28574), (3297, 24830), (4011, 20410), (4082, 20055), (4710, 17381), (4966, 16485), (5495, 14898), (5730, 14287), (6123, 13370), (6594, 12415), (6685, 12246), (7449, 10990), (8022, 10205)]