81388400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{10709}}^1$

素因数の和:10746

約数の個数: 60

約数和(自身を含む): 205846200

約数和(自身を除く): 124457800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 3800, 7600, 10709, 21418, 42836, 53545, 85672, 107090, 171344, 203471, 214180, 267725, 406942, 428360, 535450, 813884, 856720, 1017355, 1070900, 1627768, 2034710, 2141800, 3255536, 4069420, 4283600, 5086775, 8138840, 10173550, 16277680, 20347100, 40694200, 81388400]

約数ペア:

[(1, 81388400), (2, 40694200), (4, 20347100), (5, 16277680), (8, 10173550), (10, 8138840), (16, 5086775), (19, 4283600), (20, 4069420), (25, 3255536), (38, 2141800), (40, 2034710), (50, 1627768), (76, 1070900), (80, 1017355), (95, 856720), (100, 813884), (152, 535450), (190, 428360), (200, 406942), (304, 267725), (380, 214180), (400, 203471), (475, 171344), (760, 107090), (950, 85672), (1520, 53545), (1900, 42836), (3800, 21418), (7600, 10709)]