81279328

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3203}}^1$

素因数の和:3287

約数の個数: 48

約数和(自身を含む): 175207536

約数和(自身を除く): 93928208

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 61, 104, 122, 208, 244, 416, 488, 793, 976, 1586, 1952, 3172, 3203, 6344, 6406, 12688, 12812, 25376, 25624, 41639, 51248, 83278, 102496, 166556, 195383, 333112, 390766, 666224, 781532, 1332448, 1563064, 2539979, 3126128, 5079958, 6252256, 10159916, 20319832, 40639664, 81279328]

約数ペア:

[(1, 81279328), (2, 40639664), (4, 20319832), (8, 10159916), (13, 6252256), (16, 5079958), (26, 3126128), (32, 2539979), (52, 1563064), (61, 1332448), (104, 781532), (122, 666224), (208, 390766), (244, 333112), (416, 195383), (488, 166556), (793, 102496), (976, 83278), (1586, 51248), (1952, 41639), (3172, 25624), (3203, 25376), (6344, 12812), (6406, 12688)]