21318882

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:227

約数の個数: 64

約数和(自身を含む): 48263040

約数和(自身を除く): 26944158

約数列:

[1, 2, 3, 6, 13, 26, 37, 39, 74, 78, 83, 89, 111, 166, 178, 222, 249, 267, 481, 498, 534, 962, 1079, 1157, 1443, 2158, 2314, 2886, 3071, 3237, 3293, 3471, 6142, 6474, 6586, 6942, 7387, 9213, 9879, 14774, 18426, 19758, 22161, 39923, 42809, 44322, 79846, 85618, 96031, 119769, 128427, 192062, 239538, 256854, 273319, 288093, 546638, 576186, 819957, 1639914, 3553147, 7106294, 10659441, 21318882]

約数ペア:

[(1, 21318882), (2, 10659441), (3, 7106294), (6, 3553147), (13, 1639914), (26, 819957), (37, 576186), (39, 546638), (74, 288093), (78, 273319), (83, 256854), (89, 239538), (111, 192062), (166, 128427), (178, 119769), (222, 96031), (249, 85618), (267, 79846), (481, 44322), (498, 42809), (534, 39923), (962, 22161), (1079, 19758), (1157, 18426), (1443, 14774), (2158, 9879), (2314, 9213), (2886, 7387), (3071, 6942), (3237, 6586), (3293, 6474), (3471, 6142)]