28540280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^2$

素因数の和:141

約数の個数: 96

約数和(自身を含む): 73126800

約数和(自身を除く): 44586520

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 47, 68, 76, 85, 94, 95, 136, 152, 170, 188, 190, 235, 323, 340, 376, 380, 470, 646, 680, 760, 799, 893, 940, 1292, 1598, 1615, 1786, 1880, 2209, 2584, 3196, 3230, 3572, 3995, 4418, 4465, 6392, 6460, 7144, 7990, 8836, 8930, 11045, 12920, 15181, 15980, 17672, 17860, 22090, 30362, 31960, 35720, 37553, 41971, 44180, 60724, 75106, 75905, 83942, 88360, 121448, 150212, 151810, 167884, 187765, 209855, 300424, 303620, 335768, 375530, 419710, 607240, 713507, 751060, 839420, 1427014, 1502120, 1678840, 2854028, 3567535, 5708056, 7135070, 14270140, 28540280]

約数ペア:

[(1, 28540280), (2, 14270140), (4, 7135070), (5, 5708056), (8, 3567535), (10, 2854028), (17, 1678840), (19, 1502120), (20, 1427014), (34, 839420), (38, 751060), (40, 713507), (47, 607240), (68, 419710), (76, 375530), (85, 335768), (94, 303620), (95, 300424), (136, 209855), (152, 187765), (170, 167884), (188, 151810), (190, 150212), (235, 121448), (323, 88360), (340, 83942), (376, 75905), (380, 75106), (470, 60724), (646, 44180), (680, 41971), (760, 37553), (799, 35720), (893, 31960), (940, 30362), (1292, 22090), (1598, 17860), (1615, 17672), (1786, 15980), (1880, 15181), (2209, 12920), (2584, 11045), (3196, 8930), (3230, 8836), (3572, 7990), (3995, 7144), (4418, 6460), (4465, 6392)]