85781960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:403

約数の個数: 128

約数和(自身を含む): 229478400

約数和(自身を除く): 143696440

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 31, 38, 40, 44, 55, 62, 76, 88, 95, 110, 124, 152, 155, 190, 209, 220, 248, 310, 331, 341, 380, 418, 440, 589, 620, 662, 682, 760, 836, 1045, 1178, 1240, 1324, 1364, 1655, 1672, 1705, 2090, 2356, 2648, 2728, 2945, 3310, 3410, 3641, 4180, 4712, 5890, 6289, 6479, 6620, 6820, 7282, 8360, 10261, 11780, 12578, 12958, 13240, 13640, 14564, 18205, 20522, 23560, 25156, 25916, 29128, 31445, 32395, 36410, 41044, 50312, 51305, 51832, 62890, 64790, 69179, 72820, 82088, 102610, 112871, 125780, 129580, 138358, 145640, 194959, 205220, 225742, 251560, 259160, 276716, 345895, 389918, 410440, 451484, 553432, 564355, 691790, 779836, 902968, 974795, 1128710, 1383580, 1559672, 1949590, 2144549, 2257420, 2767160, 3899180, 4289098, 4514840, 7798360, 8578196, 10722745, 17156392, 21445490, 42890980, 85781960]

約数ペア:

[(1, 85781960), (2, 42890980), (4, 21445490), (5, 17156392), (8, 10722745), (10, 8578196), (11, 7798360), (19, 4514840), (20, 4289098), (22, 3899180), (31, 2767160), (38, 2257420), (40, 2144549), (44, 1949590), (55, 1559672), (62, 1383580), (76, 1128710), (88, 974795), (95, 902968), (110, 779836), (124, 691790), (152, 564355), (155, 553432), (190, 451484), (209, 410440), (220, 389918), (248, 345895), (310, 276716), (331, 259160), (341, 251560), (380, 225742), (418, 205220), (440, 194959), (589, 145640), (620, 138358), (662, 129580), (682, 125780), (760, 112871), (836, 102610), (1045, 82088), (1178, 72820), (1240, 69179), (1324, 64790), (1364, 62890), (1655, 51832), (1672, 51305), (1705, 50312), (2090, 41044), (2356, 36410), (2648, 32395), (2728, 31445), (2945, 29128), (3310, 25916), (3410, 25156), (3641, 23560), (4180, 20522), (4712, 18205), (5890, 14564), (6289, 13640), (6479, 13240), (6620, 12958), (6820, 12578), (7282, 11780), (8360, 10261)]