208475020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{1667}}^1$

素因数の和:1739

約数の個数: 72

約数和(自身を含む): 487169424

約数和(自身を除く): 278694404

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 169, 185, 260, 338, 370, 481, 676, 740, 845, 962, 1667, 1690, 1924, 2405, 3334, 3380, 4810, 6253, 6668, 8335, 9620, 12506, 16670, 21671, 25012, 31265, 33340, 43342, 61679, 62530, 86684, 108355, 123358, 125060, 216710, 246716, 281723, 308395, 433420, 563446, 616790, 801827, 1126892, 1233580, 1408615, 1603654, 2817230, 3207308, 4009135, 5634460, 8018270, 10423751, 16036540, 20847502, 41695004, 52118755, 104237510, 208475020]

約数ペア:

[(1, 208475020), (2, 104237510), (4, 52118755), (5, 41695004), (10, 20847502), (13, 16036540), (20, 10423751), (26, 8018270), (37, 5634460), (52, 4009135), (65, 3207308), (74, 2817230), (130, 1603654), (148, 1408615), (169, 1233580), (185, 1126892), (260, 801827), (338, 616790), (370, 563446), (481, 433420), (676, 308395), (740, 281723), (845, 246716), (962, 216710), (1667, 125060), (1690, 123358), (1924, 108355), (2405, 86684), (3334, 62530), (3380, 61679), (4810, 43342), (6253, 33340), (6668, 31265), (8335, 25012), (9620, 21671), (12506, 16670)]