20157488075

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{1061}}^1$

素因数の和:1197

約数の個数: 96

約数和(自身を含む): 28823869440

約数和(自身を除く): 8666381365

約数列:

[1, 5, 19, 23, 25, 37, 47, 95, 115, 185, 235, 437, 475, 575, 703, 851, 893, 925, 1061, 1081, 1175, 1739, 2185, 3515, 4255, 4465, 5305, 5405, 8695, 10925, 16169, 17575, 20159, 20539, 21275, 22325, 24403, 26525, 27025, 33041, 39257, 39997, 43475, 49867, 80845, 100795, 102695, 122015, 165205, 196285, 199985, 249335, 404225, 463657, 503975, 513475, 610075, 745883, 759943, 826025, 902911, 947473, 981425, 999925, 1146941, 1246675, 1845079, 2318285, 3729415, 3799715, 4514555, 4737365, 5734705, 9225395, 11591425, 17155309, 18647075, 18998575, 21791879, 22572775, 23686825, 28673525, 35056501, 42436817, 46126975, 85776545, 108959395, 175282505, 212184085, 428882725, 544796975, 806299523, 876412525, 1060920425, 4031497615, 20157488075]

約数ペア:

[(1, 20157488075), (5, 4031497615), (19, 1060920425), (23, 876412525), (25, 806299523), (37, 544796975), (47, 428882725), (95, 212184085), (115, 175282505), (185, 108959395), (235, 85776545), (437, 46126975), (475, 42436817), (575, 35056501), (703, 28673525), (851, 23686825), (893, 22572775), (925, 21791879), (1061, 18998575), (1081, 18647075), (1175, 17155309), (1739, 11591425), (2185, 9225395), (3515, 5734705), (4255, 4737365), (4465, 4514555), (5305, 3799715), (5405, 3729415), (8695, 2318285), (10925, 1845079), (16169, 1246675), (17575, 1146941), (20159, 999925), (20539, 981425), (21275, 947473), (22325, 902911), (24403, 826025), (26525, 759943), (27025, 745883), (33041, 610075), (39257, 513475), (39997, 503975), (43475, 463657), (49867, 404225), (80845, 249335), (100795, 199985), (102695, 196285), (122015, 165205)]