20939464

素因数分解:

$2^3\times 7^3\times {\mathrm{13}}^1\times {\mathrm{587}}^1$

素因数の和:627

約数の個数: 64

約数和(自身を含む): 49392000

約数和(自身を除く): 28452536

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 343, 364, 392, 587, 637, 686, 728, 1174, 1274, 1372, 2348, 2548, 2744, 4109, 4459, 4696, 5096, 7631, 8218, 8918, 15262, 16436, 17836, 28763, 30524, 32872, 35672, 53417, 57526, 61048, 106834, 115052, 201341, 213668, 230104, 373919, 402682, 427336, 747838, 805364, 1495676, 1610728, 2617433, 2991352, 5234866, 10469732, 20939464]

約数ペア:

[(1, 20939464), (2, 10469732), (4, 5234866), (7, 2991352), (8, 2617433), (13, 1610728), (14, 1495676), (26, 805364), (28, 747838), (49, 427336), (52, 402682), (56, 373919), (91, 230104), (98, 213668), (104, 201341), (182, 115052), (196, 106834), (343, 61048), (364, 57526), (392, 53417), (587, 35672), (637, 32872), (686, 30524), (728, 28763), (1174, 17836), (1274, 16436), (1372, 15262), (2348, 8918), (2548, 8218), (2744, 7631), (4109, 5096), (4459, 4696)]