81987412

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{991}}^1$

素因数の和:1088

約数の個数: 48

約数和(自身を含む): 162545152

約数和(自身を除く): 80557740

約数列:

[1, 2, 4, 13, 26, 37, 43, 52, 74, 86, 148, 172, 481, 559, 962, 991, 1118, 1591, 1924, 1982, 2236, 3182, 3964, 6364, 12883, 20683, 25766, 36667, 41366, 42613, 51532, 73334, 82732, 85226, 146668, 170452, 476671, 553969, 953342, 1107938, 1576681, 1906684, 2215876, 3153362, 6306724, 20496853, 40993706, 81987412]

約数ペア:

[(1, 81987412), (2, 40993706), (4, 20496853), (13, 6306724), (26, 3153362), (37, 2215876), (43, 1906684), (52, 1576681), (74, 1107938), (86, 953342), (148, 553969), (172, 476671), (481, 170452), (559, 146668), (962, 85226), (991, 82732), (1118, 73334), (1591, 51532), (1924, 42613), (1982, 41366), (2236, 36667), (3182, 25766), (3964, 20683), (6364, 12883)]