21323510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:225

約数の個数: 64

約数和(自身を含む): 44452800

約数和(自身を除く): 23129290

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 89, 95, 97, 130, 178, 190, 194, 247, 445, 485, 494, 890, 970, 1157, 1235, 1261, 1691, 1843, 2314, 2470, 2522, 3382, 3686, 5785, 6305, 8455, 8633, 9215, 11570, 12610, 16910, 17266, 18430, 21983, 23959, 43165, 43966, 47918, 86330, 109915, 112229, 119795, 164027, 219830, 224458, 239590, 328054, 561145, 820135, 1122290, 1640270, 2132351, 4264702, 10661755, 21323510]

約数ペア:

[(1, 21323510), (2, 10661755), (5, 4264702), (10, 2132351), (13, 1640270), (19, 1122290), (26, 820135), (38, 561145), (65, 328054), (89, 239590), (95, 224458), (97, 219830), (130, 164027), (178, 119795), (190, 112229), (194, 109915), (247, 86330), (445, 47918), (485, 43966), (494, 43165), (890, 23959), (970, 21983), (1157, 18430), (1235, 17266), (1261, 16910), (1691, 12610), (1843, 11570), (2314, 9215), (2470, 8633), (2522, 8455), (3382, 6305), (3686, 5785)]