208787960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^3\times {\mathrm{761}}^1$

素因数の和:829

約数の個数: 64

約数和(自身を含む): 496519200

約数和(自身を除く): 287731240

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 761, 1444, 1522, 1805, 2888, 3044, 3610, 3805, 6088, 6859, 7220, 7610, 13718, 14440, 14459, 15220, 27436, 28918, 30440, 34295, 54872, 57836, 68590, 72295, 115672, 137180, 144590, 274360, 274721, 289180, 549442, 578360, 1098884, 1373605, 2197768, 2747210, 5219699, 5494420, 10439398, 10988840, 20878796, 26098495, 41757592, 52196990, 104393980, 208787960]

約数ペア:

[(1, 208787960), (2, 104393980), (4, 52196990), (5, 41757592), (8, 26098495), (10, 20878796), (19, 10988840), (20, 10439398), (38, 5494420), (40, 5219699), (76, 2747210), (95, 2197768), (152, 1373605), (190, 1098884), (361, 578360), (380, 549442), (722, 289180), (760, 274721), (761, 274360), (1444, 144590), (1522, 137180), (1805, 115672), (2888, 72295), (3044, 68590), (3610, 57836), (3805, 54872), (6088, 34295), (6859, 30440), (7220, 28918), (7610, 27436), (13718, 15220), (14440, 14459)]