20285550

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{739}}^1$

素因数の和:818

約数の個数: 72

約数和(自身を含む): 55468920

約数和(自身を除く): 35183370

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 61, 75, 90, 122, 150, 183, 225, 305, 366, 450, 549, 610, 739, 915, 1098, 1478, 1525, 1830, 2217, 2745, 3050, 3695, 4434, 4575, 5490, 6651, 7390, 9150, 11085, 13302, 13725, 18475, 22170, 27450, 33255, 36950, 45079, 55425, 66510, 90158, 110850, 135237, 166275, 225395, 270474, 332550, 405711, 450790, 676185, 811422, 1126975, 1352370, 2028555, 2253950, 3380925, 4057110, 6761850, 10142775, 20285550]

約数ペア:

[(1, 20285550), (2, 10142775), (3, 6761850), (5, 4057110), (6, 3380925), (9, 2253950), (10, 2028555), (15, 1352370), (18, 1126975), (25, 811422), (30, 676185), (45, 450790), (50, 405711), (61, 332550), (75, 270474), (90, 225395), (122, 166275), (150, 135237), (183, 110850), (225, 90158), (305, 66510), (366, 55425), (450, 45079), (549, 36950), (610, 33255), (739, 27450), (915, 22170), (1098, 18475), (1478, 13725), (1525, 13302), (1830, 11085), (2217, 9150), (2745, 7390), (3050, 6651), (3695, 5490), (4434, 4575)]