21235188

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:353

約数の個数: 72

約数和(自身を含む): 55298208

約数和(自身を除く): 34063020

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 37, 39, 52, 74, 78, 111, 148, 156, 169, 222, 283, 338, 444, 481, 507, 566, 676, 849, 962, 1014, 1132, 1443, 1698, 1924, 2028, 2886, 3396, 3679, 5772, 6253, 7358, 10471, 11037, 12506, 14716, 18759, 20942, 22074, 25012, 31413, 37518, 41884, 44148, 47827, 62826, 75036, 95654, 125652, 136123, 143481, 191308, 272246, 286962, 408369, 544492, 573924, 816738, 1633476, 1769599, 3539198, 5308797, 7078396, 10617594, 21235188]

約数ペア:

[(1, 21235188), (2, 10617594), (3, 7078396), (4, 5308797), (6, 3539198), (12, 1769599), (13, 1633476), (26, 816738), (37, 573924), (39, 544492), (52, 408369), (74, 286962), (78, 272246), (111, 191308), (148, 143481), (156, 136123), (169, 125652), (222, 95654), (283, 75036), (338, 62826), (444, 47827), (481, 44148), (507, 41884), (566, 37518), (676, 31413), (849, 25012), (962, 22074), (1014, 20942), (1132, 18759), (1443, 14716), (1698, 12506), (1924, 11037), (2028, 10471), (2886, 7358), (3396, 6253), (3679, 5772)]