18998487980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{701}}^1\times {\mathrm{977}}^1$

素因数の和:1779

約数の個数: 96

約数和(自身を含む): 42676320960

約数和(自身を除く): 23677832980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 73, 76, 95, 146, 190, 292, 365, 380, 701, 730, 977, 1387, 1402, 1460, 1954, 2774, 2804, 3505, 3908, 4885, 5548, 6935, 7010, 9770, 13319, 13870, 14020, 18563, 19540, 26638, 27740, 37126, 51173, 53276, 66595, 71321, 74252, 92815, 102346, 133190, 142642, 185630, 204692, 255865, 266380, 285284, 356605, 371260, 511730, 684877, 713210, 972287, 1023460, 1355099, 1369754, 1426420, 1944574, 2710198, 2739508, 3424385, 3889148, 4861435, 5420396, 6775495, 6848770, 9722870, 13012663, 13550990, 13697540, 19445740, 26025326, 27101980, 49996021, 52050652, 65063315, 99992042, 130126630, 199984084, 249980105, 260253260, 499960210, 949924399, 999920420, 1899848798, 3799697596, 4749621995, 9499243990, 18998487980]

約数ペア:

[(1, 18998487980), (2, 9499243990), (4, 4749621995), (5, 3799697596), (10, 1899848798), (19, 999920420), (20, 949924399), (38, 499960210), (73, 260253260), (76, 249980105), (95, 199984084), (146, 130126630), (190, 99992042), (292, 65063315), (365, 52050652), (380, 49996021), (701, 27101980), (730, 26025326), (977, 19445740), (1387, 13697540), (1402, 13550990), (1460, 13012663), (1954, 9722870), (2774, 6848770), (2804, 6775495), (3505, 5420396), (3908, 4861435), (4885, 3889148), (5548, 3424385), (6935, 2739508), (7010, 2710198), (9770, 1944574), (13319, 1426420), (13870, 1369754), (14020, 1355099), (18563, 1023460), (19540, 972287), (26638, 713210), (27740, 684877), (37126, 511730), (51173, 371260), (53276, 356605), (66595, 285284), (71321, 266380), (74252, 255865), (92815, 204692), (102346, 185630), (133190, 142642)]