20909712908

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1\times {\mathrm{39043}}^1$

素因数の和:39702

約数の個数: 48

約数和(自身を含む): 43239512064

約数和(自身を除く): 22329799156

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 617, 868, 1234, 2468, 4319, 8638, 17276, 19127, 38254, 39043, 76508, 78086, 133889, 156172, 267778, 273301, 535556, 546602, 1093204, 1210333, 2420666, 4841332, 8472331, 16944662, 24089531, 33889324, 48179062, 96358124, 168626717, 337253434, 674506868, 746775461, 1493550922, 2987101844, 5227428227, 10454856454, 20909712908]

約数ペア:

[(1, 20909712908), (2, 10454856454), (4, 5227428227), (7, 2987101844), (14, 1493550922), (28, 746775461), (31, 674506868), (62, 337253434), (124, 168626717), (217, 96358124), (434, 48179062), (617, 33889324), (868, 24089531), (1234, 16944662), (2468, 8472331), (4319, 4841332), (8638, 2420666), (17276, 1210333), (19127, 1093204), (38254, 546602), (39043, 535556), (76508, 273301), (78086, 267778), (133889, 156172)]