28267040

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:226

約数の個数: 96

約数和(自身を含む): 71124480

約数和(自身を除く): 42857440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 41, 62, 80, 82, 124, 139, 155, 160, 164, 205, 248, 278, 310, 328, 410, 496, 556, 620, 656, 695, 820, 992, 1112, 1240, 1271, 1312, 1390, 1640, 2224, 2480, 2542, 2780, 3280, 4309, 4448, 4960, 5084, 5560, 5699, 6355, 6560, 8618, 10168, 11120, 11398, 12710, 17236, 20336, 21545, 22240, 22796, 25420, 28495, 34472, 40672, 43090, 45592, 50840, 56990, 68944, 86180, 91184, 101680, 113980, 137888, 172360, 176669, 182368, 203360, 227960, 344720, 353338, 455920, 689440, 706676, 883345, 911840, 1413352, 1766690, 2826704, 3533380, 5653408, 7066760, 14133520, 28267040]

約数ペア:

[(1, 28267040), (2, 14133520), (4, 7066760), (5, 5653408), (8, 3533380), (10, 2826704), (16, 1766690), (20, 1413352), (31, 911840), (32, 883345), (40, 706676), (41, 689440), (62, 455920), (80, 353338), (82, 344720), (124, 227960), (139, 203360), (155, 182368), (160, 176669), (164, 172360), (205, 137888), (248, 113980), (278, 101680), (310, 91184), (328, 86180), (410, 68944), (496, 56990), (556, 50840), (620, 45592), (656, 43090), (695, 40672), (820, 34472), (992, 28495), (1112, 25420), (1240, 22796), (1271, 22240), (1312, 21545), (1390, 20336), (1640, 17236), (2224, 12710), (2480, 11398), (2542, 11120), (2780, 10168), (3280, 8618), (4309, 6560), (4448, 6355), (4960, 5699), (5084, 5560)]